Nutrient Management Case Study

Theme- Integrated nutrient management
Effect of nitrogen, phosphorus and cutting management on yield and quality of oat (Avena sativa L.)
Priti Malik*, B. S Duhan**, Meena Sewhag*, Karmal Malik* and Virender Hooda*

* Department of Agronomy, ** Department of Soil Science, CCSHAU, Hisar-125004
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INTRODUCTION
The country is having only 4.4 per cent of the cultivated area under fodder crops with an annual total forage production of 833 m t (390 m t green and 443 m t dry forage). Whereas, the annual forage requirement is 1594 m t (1025 m t green and 569 m t dry) to support the existing livestock population. The present feed and fodder resources of the country can meet only 48 per cent of the requirement, with a vast

The data revealed that crude protein in fodder decreased significantly with increase in age of crop and decrease was from 13.51 % at cut at 50 DAS to 12.64 % 12.51 at cut 60 DAS and 11.77 at cut at 70 DAS. However, crude protein content in grain and straw were found to be non significant under various cutting management treatments. Crude protein content in fodder, grain and straw were found lowest (11.61, 8.85 and 2.17 % respectively) under F0 (no N and P) treatment and with increase in fertility levels there was significant increase in crude protein content and highest values (13.65, 9.32 and 2.33 per % respectively) were recorded under highest fertility level (120 kg N + 60 kg P2O5 ha-1). Rana et al. (2009) and Devi et al. (2010) also reported the similar

indicated that in vitro dry matter digestibility (IVDMD) in fodder was found maximum (68.48 %) under C50 treatment and it goes on decreasing with each delay in fodder cut and the lowest IVDMD (62.98 %) was found when fodder was cut at 70 DAS. Data further indicated that differences between different fertility levels were non significant with respect to IVDMD in fodder. However, DDM (q ha-1) increased significantly with each successive increase in fertility level upto the highest level i.e F3 treatment and increase was from 13.85 to 27.56 q ha-1 over F0, F1 and F2, respectively.

Table:1. Effect of cutting management and fertility levels on dry fodder, grain and straw yield (qha-1)
Cutting management Fodder (Dry) yield Grain yield Straw yield C.P in fodder (%) C.P in grain (%) C.P in straw (%) IVDMD (%) DDM (q/ha)
First cut 28.50 25.57 65.46 13.51 9.13 2.28 68.48 19.44
Second cut 31.90 28.06 63.68 12.64 9.12 2.23 64.99 20.73
Third cut 35.70 23.93 55.40 11.77 9.06 2.27 62.98 22.48
LSD (P= 0.05) 1.51 1.47 3.75 0.32 NS NS 1.22 1.20
Fertility levels
F0 21.27 21.92 57.01 11.61 8.85 2.17 65.53