Background: A field experiment was conducted at the Experimental Research Farm of School and Agricultural Sciences and Rural Development (SASRD), Nagaland University, during the Kharif season of 2017 and 2018 to study the effect of sulphur and zinc fertilization for biofortification in soybean (Glycine max L. Merrill) under Nagaland condition. Methods: The experiment was laid out in a Factorial Randomized Block Design (RBD) with 15 treatments combinations viz sulphur (0 kg ha-1, 20 kg ha-1 and 40 kg ha-1), zinc (0 kg ha-1, 5 kg ha-1, 10 kg ha-1, 15 kg ha-1, and 20 kg ha-1) replicated thrice. Result: The results obtained showed that the plant growth and yield attributes were significantly influenced by the treatment combination of S20Zn20. The application of 20 kg S ha-1 showed higher plant height, number of leaves and branches per plant, shoot dry weight, leaf area index (LAI), crop growth rate (CGR), number of nodules and was found to be quite comparable with the treatment of 40 kg S ha-1. The zinc fertilization of 20 kg Zn ha-1 showed greater response by the plant and showed increased plant height, number of leaves and branches per plant, shoot dry weight, leaf area index (LAI) and number of nodules at par with 15 kg Zn ha-1. A higher number of pods (40.48 and 40.89), seed yield of (1.07 t ha-1 and 1.10 t ha-1) and stover yield (1.97 t ha-1 and 2.02 t ha-1) were observed in 20 kg S ha-1 and 20 kg Zn ha-1 fertilization respectively as compared to the other levels of treatments. However, the length of pods, number of seeds per pod, test weight and harvest index did not differ significantly by the treatments.

An experiment was conducted at the ICAR Nagaland Centre during rainy (kharif) season of 2018–2019 and 2019–2020 to check the most suitable maize (Zea mays L.) variety and cropping geometry for maize + greengram (Vigna radiata L.) intercropping system. The results revealed that among the varieties of maize, VHM-45 recorded highest grain yield (4.92 t/ha) and stover yield (14.76 t/ha). Whereas, in intercropping system 1:1 (maize + greengram) recorded highest grain yield (5.16 t/ha) and stover yield (17.06 t/ha). The highest grain yield (1.27 t/ha) and stover yield (2.64 t/ha) of greengram was recorded in sole crop. Maize equivalent yield (MEY) was highest in VHM-45 intercropped with greengram (8.73 t/ha). Whereas, in crop geometry, maize + greengram (1:1) intercropping system recorded the highest MEY (9.16 t/ha). The soil nutrient status after harvest showed an increase in available N, P2O5 and K2O kg/ha in sole or higher density in greengram as compared to others. The competition functions like land equivalent ratio (LER) and aggressivity (A) in maize + greengram prominently indicated benefits of the intercropping system. Similarly, highest profitability and energy efficiency was recorded in VHM-45 among the maize varieties and among the cropping geometry; additive series (maize + greengram 1:1) recorded the highest profitability and energy profitability respectively.