Abstract
A field experiment was conducted during Rabi season, 2014-15 to 2016-17 at Assam Agricultural University, Jorhat, Assam to study the effect of irrigation and fertilizer on late sown rapeseed (Brassica campestris var. Toria) grown after rice with 4 irrigation regimes viz., rainfed, 6 cm irrigation at pre- flowering stage (25 DAS), 6 cm irrigation at siliqua formation stage (50 DAS) and 6 cm irrigation at pre- flowering (25 DAS) and siliqua formation stage (50 DAS) with three different fertilizer levels viz., 45-30-30, 60-40-40 and 75-50-50 N-P2O5-K2O kg ha-1. Two irrigations applied at pre-floweringand siliqua formation stage recorded the highest chlorophyll stability index, growth viz., plant height, number of branches plant-1 and leaf area index and yield attributes viz., siliquae plant-1 and number of seeds siliqua-1. Two irrigations at preflowering- and siliqua formation stage also recorded higher seed- and stover yield than one irrigation at flowering, one irrigation at siliqua formation and rainfed crop. This treatment also recorded the highest mean net return (Rs. 15562/ha) and B:C ratio (1.76). However, among the fertilizer levels, application of 75-50-50 N-P2O5-K2O kg ha-1 being at par with 60- 40-40 N-P2O5-K2O kg ha-1 recorded the highest growth, yield attributes and seed- and stover yield. The highest water use efficiency (WUE) was observed under rainfed condition.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 8
Claim · model-written summary
Two irrigations at pre-flowering and siliqua formation gave the highest chlorophyll stability index.
- Taxon
- rapeseede1
- Treatment
- Two irrigations applied at pre-floweringand siliqua formation stagee0
- Outcome
- chlorophyll stability indexe0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“Two irrigations applied at pre-floweringand siliqua formation stage recorded the highest chlorophyll stability index”
e1“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
Two irrigations at those stages gave the highest plant height, branch number, and leaf area index.
- Taxon
- rapeseede1
- Treatment
- Two irrigations applied at pre-floweringand siliqua formation stagee0
- Outcome
- plant height, number of branches plant-1 and leaf area indexe0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“Two irrigations applied at pre-floweringand siliqua formation stage recorded the highest chlorophyll stability index, growth viz., plant height, number of branches plant-1 and leaf area index”
e1“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
Two irrigations at those stages gave the highest siliquae per plant and seeds per siliqua.
- Taxon
- rapeseede1
- Treatment
- Two irrigations applied at pre-floweringand siliqua formation stagee0
- Outcome
- siliquae plant-1 and number of seeds siliqua-1e0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“Two irrigations applied at pre-floweringand siliqua formation stage recorded the highest chlorophyll stability index, growth viz., plant height, number of branches plant-1 and leaf area index and yield attributes viz., siliquae plant-1 and number of seeds siliqua-1”
e1“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
Two irrigations produced higher seed and stover yield than one irrigation at either stage or rainfed cultivation.
Verbatim
e0“Two irrigations at preflowering- and siliqua formation stage also recorded higher seed- and stover yield than one irrigation at flowering, one irrigation at siliqua formation and rainfed crop”
e1“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
Two irrigations yielded the highest mean net return of Rs. 15562/ha.
- Taxon
- rapeseede2
- Treatment
- Two irrigations at preflowering- and siliqua formation stagee1
- Outcome
- mean net returne0
- Direction
- higheste0
- Value
- Rs. 15562/hae0
Not reportedComparator
Verbatim
e0“This treatment also recorded the highest mean net return (Rs. 15562/ha)”
e1“Two irrigations at preflowering- and siliqua formation stage”
e2“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
Two irrigations yielded the highest benefit-cost ratio of 1.76.
- Taxon
- rapeseede2
- Treatment
- Two irrigations at preflowering- and siliqua formation stagee1
- Outcome
- B:C ratioe0
- Direction
- higheste0
- Value
- 1.76e0
Not reportedComparator
Verbatim
e0“This treatment also recorded the highest mean net return (Rs. 15562/ha) and B:C ratio (1.76)”
e1“Two irrigations at preflowering- and siliqua formation stage”
e2“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
The 75-50-50 fertilizer level, at par with 60-40-40, gave the highest growth, yield attributes, seed yield, and stover yield.
Verbatim
e0“application of 75-50-50 N-P2O5-K2O kg ha-1 being at par with 60- 40-40 N-P2O5-K2O kg ha-1 recorded the highest growth, yield attributes and seed- and stover yield”
e1“late sown rapeseed (Brassica campestris var. Toria)”
Claim · model-written summary
Rainfed cultivation had the highest water use efficiency.
Not reportedComparator
Verbatim
e0“The highest water use efficiency (WUE) was observed under rainfed condition”
e1“late sown rapeseed (Brassica campestris var. Toria)”
The same questions in other papers
rainfall · physiology: water · Brassica napus (oilseed rape)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
irrigation · yield · Brassica napus (oilseed rape)Positive and negative results
28 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
38 papers more in this group
See all 42 papers →irrigation · physiology: pigments · Brassica napus (oilseed rape)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.