Abstract
Improper sulfur (S) and potassium (K) fertilizer management, particularly with continued soil nutrient mining, is one of the major factors contributing to low seed yield of canola in northwestern Pakistan. A field experiment was conducted in 2007−2008 on a S and K deficient clay loam soil at the Research Farm of NWFP (Northwest Frontier Province) Agricultural University, Peshawar, Pakistan, with an objective to determine seed yield and yield components response of Brassica oilseed rape versus mustard to S and K application. Twenty treatments in a randomized complete block design were consisted of two oilseed rape (B. napus canola) and mustard (B. juncea canola) genotypes at three rates each of S (15, 30, and 45 kg S ha−1) and K (30, 60, and 90 kg K ha−1) fertilizers plus one control (no S and K applied). Seed yield and yield components increased significantly with K and S fertilization as compared to the zero-S/zero-K control. Both genotypes responded positively for seed yield and yield components to K and S fertilization, but the magnitude of response varied with levels of S and K, as well as combined K + S applications. It is concluded that a combination of 60 kg K + 30 kg S ha−1 would improve seed yield and yield components of rape and mustard in the study area and contribute significantly to increased production. Growing B. napus was better than B. juncea in the study area, because B. napus produced significantly higher seed yield and yield components than B. juncea, indicating that yield components are the most important criteria for selection of Brassica genotypes for higher seed yield.
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Claims 4
Claim · model-written summary
Seed yield and yield components of oilseed rape increased significantly with K and S fertilization compared with the zero-S/zero-K control.
- Taxon
- oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse3 - Treatment
- K and S fertilizatione1
- Outcome
- Seed yield and yield componentse1
- Direction
- increasede1
- Comparator
- zero-S/zero-K controle1
- Setting
- Peshawar, Pakistane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“A field experiment was conducted in 2007−2008 on a S and K deficient clay loam soil at the Research Farm of NWFP (Northwest Frontier Province) Agricultural University, Peshawar, Pakistan”
e1“Seed yield and yield components increased significantly with K and S fertilization as compared to the zero-S/zero-K control”
e2“Both genotypes responded positively for seed yield and yield components to K and S fertilization”
e3“two oilseed rape (B. napus canola) and mustard (B. juncea canola) genotypes”
Claim · model-written summary
Seed yield and yield components of mustard increased significantly with K and S fertilization compared with the zero-S/zero-K control.
Verbatim
e0“A field experiment was conducted in 2007−2008 on a S and K deficient clay loam soil at the Research Farm of NWFP (Northwest Frontier Province) Agricultural University, Peshawar, Pakistan”
e1“Seed yield and yield components increased significantly with K and S fertilization as compared to the zero-S/zero-K control”
e2“Both genotypes responded positively for seed yield and yield components to K and S fertilization”
e3“two oilseed rape (B. napus canola) and mustard (B. juncea canola) genotypes”
Claim · model-written summary
B. napus produced significantly higher seed yield and yield components than B. juncea.
- Taxon
- B. napusBrassica napuse4
- Outcome
- seed yield and yield componentse4
- Direction
- highere4
- Comparator
- B. junceae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“B. napus produced significantly higher seed yield and yield components than B. juncea”
Claim · model-written summary
A combination of 60 kg K + 30 kg S ha−1 would improve seed yield and yield components of rape and mustard in the study area.
Verbatim
e5“a combination of 60 kg K + 30 kg S ha−1 would improve seed yield and yield components of rape and mustard”
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