Effect of NPK Fertilization Strategies on Growth, Yield, Nutrient Use Efficiency and Economic Benefits of Relay Intercropped Wheat in Cotton

Crop nutrient requirements vary in sole/mono and multiple cropping systems indicating the need for optimization of fertilization programs. This 2-years study was performed to investigate the influence of different strategies related to NPK fertilization timing viz. T1 (control, no NPK application),...

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Bibliographic Details
Published in:Pakistan journal of agricultural research 2021, Vol.34 (1), p.49
Main Authors: Zohaib, Ali, Ullah, Habib, Anjum, Shakeel Ahmad, Tabassum, Tahira, Hussain, Muzzammil, Nawaz, Mohsin, Abbas, Ghulam, Irshad, Sohail
Format: Article
Language:English
Subjects:
Agricultural economics
Agricultural production
Cereal crops
Compound fertilizers
Cotton
Crop yield
Cropping systems
Economic analysis
Efficiency
Experiments
Fertilization
Fertilizers
Food
Food supply
Grain
Harvest
Multiple cropping
Nitrogen
Nutrient requirements
Nutrients
Optimization
Relay
Seeds
Soil fertility
Tillers
Wheat
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Summary:Crop nutrient requirements vary in sole/mono and multiple cropping systems indicating the need for optimization of fertilization programs. This 2-years study was performed to investigate the influence of different strategies related to NPK fertilization timing viz. T1 (control, no NPK application), T2 (all PK at sowing, ½ N at tillering and ½ at booting), T3 (½ PK at sowing, ½ NPK at tillering and ½ N at booting), T4 (all PK at sowing, ½ N at sowing and ½ at tillering), T5 (all PK at tillering, ½ N at tillering and ½ at booting), T6 (all PK at tillering and N at booting) and T7 (all NPK at sowing) on growth, yield, agronomic nutrient use efficiency of nitrogen (NUEA) and economic benefits of relay-intercropped wheat in cotton. Fertilization timing significantly affected growth, yield and NUEA of wheat. Application of T4 (all PK at sowing, ½ N at sowing and ½ at tillering) caused maximum improvement in plant height, fertile tillers, grains per spike, biological yield, grain yield and NUEA. Economic analysis also manifested that the greatest net returns and benefit cost ratio (BCR) were obtained by same NPK application timing (i.e. T4). In conclusion, fertilization timing substantially affected the yield, NUEA and economic benefits of relay intercropped wheat in cotton; and application of ½ N and all PK at sowing and ½ N at tillering was most appropriate option.
ISSN:0251-0480
2227-8311
DOI:10.17582/journal.pjar/2021/34.1.49.57