Abstract
Appropriate rate and frequency of fertigation is important for the production of cassava (Manihot esculenta Crantz). The present study investigated the effects of different fertigation rates and frequencies on cassava production under a drip irrigation system in sandy clay loam (SCL) and loamy sand (LS) soils. The study was undertaken in the 2014/15 and 2015/16 growing seasons and the treatments were designed to compare two fertilization methods and two fertilizer rates. The results show that while using the same amount of fertilizer, fertigation resulted in higher leaf nutrient content, storage root yield, and fertilizer nutrient use efficiency in comparison to soil fertilizer application. Fertigation based on nutrient balance model (F-NB) significantly increased the leaf N content, storage root yield, starch content, and harvest index compared to fertigation based on Department of Agriculture recommendations (F-DOA). Yield and starch content for the same treatments in SCL soil were higher than those in LS soil. In the 2016/17 growing season, the treatments were designed to compare two fertilization methods, two fertilizer rates, and two fertigation frequencies. F-NB with a high frequency (F-NBH) produced the highest storage root yield, while the lowest yield was produced by the soil fertilizer application based on DOA (S-DOA) in both soils. The nitrogen (N), phosphorus (P), and potassium (K) distribution in the plant parts were mostly concentrated in the stems and storage roots, while F-NBH increased the nutrient uptake and increased N, P, and K concentrations in the cassava storage root, and enhanced the yield and starch content.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 16
Claim · model-written summary
Fertigation increased cassava leaf nutrient content compared with soil fertilizer application.
- Taxon
- cassava
Manihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertigation resulted in higher leaf nutrient content, storage root yield, and fertilizer nutrient use efficiency in comparison to soil fertilizer application”
e1“cassava”
Claim · model-written summary
Fertigation increased cassava storage root yield compared with soil fertilizer application.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertigation resulted in higher leaf nutrient content, storage root yield, and fertilizer nutrient use efficiency in comparison to soil fertilizer application”
e1“cassava”
Claim · model-written summary
Fertigation increased fertilizer nutrient use efficiency compared with soil fertilizer application.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertigation resulted in higher leaf nutrient content, storage root yield, and fertilizer nutrient use efficiency in comparison to soil fertilizer application”
e1“cassava”
Claim · model-written summary
Nutrient-balance fertigation increased cassava leaf nitrogen relative to recommended fertigation.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertigation based on nutrient balance model (F-NB) significantly increased the leaf N content, storage root yield, starch content, and harvest index compared to fertigation based on Department of Agriculture recommendations (F-DOA)”
e1“cassava”
Claim · model-written summary
Nutrient-balance fertigation increased cassava storage root yield relative to recommended fertigation.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertigation based on nutrient balance model (F-NB) significantly increased the leaf N content, storage root yield, starch content, and harvest index compared to fertigation based on Department of Agriculture recommendations (F-DOA)”
e1“cassava”
Claim · model-written summary
Nutrient-balance fertigation increased cassava starch content relative to recommended fertigation.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertigation based on nutrient balance model (F-NB) significantly increased the leaf N content, storage root yield, starch content, and harvest index compared to fertigation based on Department of Agriculture recommendations (F-DOA)”
e1“cassava”
Claim · model-written summary
Nutrient-balance fertigation increased cassava harvest index relative to recommended fertigation.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertigation based on nutrient balance model (F-NB) significantly increased the leaf N content, storage root yield, starch content, and harvest index compared to fertigation based on Department of Agriculture recommendations (F-DOA)”
e1“cassava”
Claim · model-written summary
Cassava yield was higher in sandy clay loam than loamy sand.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and starch content for the same treatments in SCL soil were higher than those in LS soil”
e1“cassava”
Claim · model-written summary
Cassava starch content was higher in sandy clay loam than loamy sand.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and starch content for the same treatments in SCL soil were higher than those in LS soil”
e1“cassava”
Claim · model-written summary
High-frequency nutrient-balance fertigation gave the highest storage-root yield in both soils.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F-NB with a high frequency (F-NBH) produced the highest storage root yield, while the lowest yield was produced by the soil fertilizer application based on DOA (S-DOA) in both soils”
e1“cassava”
Claim · model-written summary
Soil fertilizer application based on DOA gave the lowest cassava yield in both soils.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F-NB with a high frequency (F-NBH) produced the highest storage root yield, while the lowest yield was produced by the soil fertilizer application based on DOA (S-DOA) in both soils”
e1“cassava”
Claim · model-written summary
Plant nitrogen, phosphorus and potassium were mostly concentrated in stems and storage roots.
- Taxon
- cassavaManihot esculentae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nitrogen (N), phosphorus (P), and potassium (K) distribution in the plant parts were mostly concentrated in the stems and storage roots”
e1“cassava”
Claim · model-written summary
High-frequency nutrient-balance fertigation increased cassava nutrient uptake.
- Taxon
- cassavaManihot esculentae0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F-NBH increased the nutrient uptake and increased N, P, and K concentrations in the cassava storage root, and enhanced the yield and starch content”
e1“cassava”
Claim · model-written summary
High-frequency nutrient-balance fertigation increased nitrogen, phosphorus and potassium concentrations in cassava storage roots.
- Taxon
- cassavaManihot esculentae0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F-NBH increased the nutrient uptake and increased N, P, and K concentrations in the cassava storage root, and enhanced the yield and starch content”
e1“cassava”
Claim · model-written summary
High-frequency nutrient-balance fertigation enhanced cassava yield.
- Taxon
- cassavaManihot esculentae0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F-NBH increased the nutrient uptake and increased N, P, and K concentrations in the cassava storage root, and enhanced the yield and starch content”
e1“cassava”
Claim · model-written summary
High-frequency nutrient-balance fertigation enhanced cassava starch content.
- Taxon
- cassavaManihot esculentae0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F-NBH increased the nutrient uptake and increased N, P, and K concentrations in the cassava storage root, and enhanced the yield and starch content”
e1“cassava”
The same questions in other papers
fertilization · quality: sugar starch · Manihot esculenta (cassava)Positive and negative results
21 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
22 papers more in this group
See all 26 papers →fertilization · nutrient: content · Manihot esculenta (cassava)Positive and negative results
38 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
38 papers more in this group
See all 42 papers →fertilization · yield · Manihot esculenta (cassava)Positive and negative results
140 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- no effect
149 papers more in this group
See all 153 papers →fertilization · nutrient: efficiency · Manihot esculenta (cassava)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.