PRODUCTIVITY OF FOOD-FORAGE INTERCROPPING SYSTEM AS INFLUENCED BY INTEGRATED NUTRIENT MANAGEMENT
KHUMLO LEVISH CHONGLOI,* AND K.K.SHARMA
Krishi Vigyan Kendra, Chandel, ICAR Research Complex for NEH Region, Manipur Centre,
Lamphelpat, Imphal (Manipur)
Assam Agricultural University, Jorhat (Assam)
*(e-mail : levischongloi@gmail.com)
(Received : 10 December 2019; Accepted : 25 December 2019)

SUMMARY

A field experiment was conducted at two different areas of the Instructional-Cum-Research (ICR) farm of the Assam Agricultural University, Jorhat in 2014-15 and 2015-16 to study the “Productivity of food-forage intercropping system as influenced by integrated nutrient management”. The treatments consist of four intercropping system viz. C1: sole oats, C2: sole pea, C3: 3:2 row proportions and C4: 3:3 row proportion of oat+pea intercropping and four integrated nutrient management Viz., F1: RDF (inorganics), F2: 50% N of RDF + 50% N through FYM, F3: 50 % N of RDF + 50% N through vermicompost and F4: 50% N through FYM + 50% N through vermicompost. Thus sixteen treatment combinations were laid out in split plot design with three replications with intercropping system in the main plots and INM in the sub-plots. The soils of the experimental site were acidic in reaction, sandy loam in texture, medium in OC, low in available N and P2O5 and medium in K2O. Highest green forage and dry matter yield was recorded in sole oats, among the intercropping system the highest green forage yield of 199.38 and 217.98 q/ha and dry matter yield of 43.52 and 49.72 q/ha was recorded in 3:2 row proportions during 2014-15 and 2015-16 respectively. Application of 50% N of RDF + 50% N through vermicompost to oats gave the highest green forage and dry matter yield during 2014-15 and 2015-16. Superior pod yield was recorded in sole pea culture showing the value of 44.74 and 47.24 q/ha in 2014-15 and 2015-16 respectively. The pea equivalent yield was observed to be highest in sole pea but among the intercropping system statistically superior pea equivalent yield was recorded in 3:3 row proportions over 3:2 row proportions and sole oats in both the experimental years. Integrated nutrient management on pod yield, green forage yield, dry matter yield and pea equivalent yield was significantly higher in 50 % N of RDF + 50% N through vermicompost than the other treatment combination in both the years. Therefore, in oat-pea intercropping system, it can be recommended to apply 50% RDF through vermicompost + 50% RDF through inorganic fertilizers, which will reduce the load of chemical fertilizers up to 50% with 3:3 row proportions of oat+pea intercropping systems.

Key words:Food-forage, integrated nutrient management, FYM, vermicompost