Effect of nonwoven jute agrotextile mulch on soil health and productivity of broccoli (Brassica oleracea L.) in lateritic soil.

A field experiment was conducted in winter season of 2015-2016 in the dry lateritic soil of Eastern India to study the effect of different thicknesses of nonwoven jute agrotextile mulches (NJATM) along with other mulches on soil health, growth and productivity of broccoli (Brassica oleracea L.). The experiment was conducted in randomized block design with six treatments viz., T (control, i.e. no mulching), T (300 gsm NJATM), T (350 gsm NJATM), T (400 gsm NJATM), T (rice straw) and T (black polythene mulch), each of which was replicated four times. The highest average curd weight (355.25 g) and yield (8.53 t ha) of broccoli were recorded in T treatment. The lowest density of broad leaved weed, sedges and grasses were recorded in T treatment which was statistically at par with T. All the treatments composing of NJATM increased the population of all the soil microbes except bacteria in the root rhizosphere of broccoli from their initial population. On average, the highest population of fungi (54.0 × 10 cfu per g) and actinomycetes (134.75 × 10 cfu per g) was recorded with T and T treatments respectively in the post-harvest soil. The soil moisture was conserved in all treatments compared to control showing highest moisture content in T treatment. Organic carbon and available N, P and K contents of soil were increased in all mulch treated plots compared to control, and their initial value and their highest value were recorded in T. The NJATM of 350 gsm thickness was very effective compared to other mulches in increasing the growth and productivity of broccoli by suppressing weeds, increasing moisture, microbial population and nutrient content of the lateritic soil.