Demonstration on Efficacy of Pseudomonas fluorescens and Azotobacter sp. against Meloiodgyne incognita in Farmers Field of Assam

Effect of Irrigation Systems, Bio-Fertilizers and Polymers on some Growth Characteristics and Potato Production in Desert Soils, Karbala Governorate

“…(5) Where: Q = drainage (m 3 sec -1 ), t = irrigation time (sec), A = area of the experimental unit (m 2 ), d = depth of water to be added (m). According to the ready water content (A w ) from the difference between the volumetric moisture content at a water potential of 10 kap, which represents the field capacity (θ fc ) and the volumetric moisture content at a water potential of 1500 kap, which represents the permanent wilting point (θ wp ) according to the following equation: (6) As: A w = Ready water content in the soil (cm 3 cm -3 ) θ fc = Volumetric moisture content at field capacity (cm 3 cm -3 ) θ wp = Volumetric moisture content at permanent wilting point (cm 3 cm -3 ). The depth of the added water was calculated:…”

“…Recent studies have given importance to the use of biofertilizers, which reduce the use of chemical fertilizers by approximately 40-50% to contribute to sustainable agriculture, and the use of biofertilizers leads to an increase in plant growth and crop productivity to more than 30% [5]. Plant growth promoting microorganisms (PGPM) is an important group of microbial vaccines that are found in the soil rhizosphere and have the ability to coexist with the roots of plants and improve their growth and positive effect through the dissolution of phosphorous, zinc, iron, mineralization of organic matter, nitrogen fixation, production of nutrients, hormones and plant enzymes protection from pathogens and increase the plant's ability to withstand biotic and abiotic stresses and environmental conditions, In addition to their use in control operations as biocides, which is positively reflected in the growth and improvement of the yield of the crop [6]. The aims to study the effect of irrigation systems, irrigation intervals, bio-fertilizers and polymers on some characteristics of vegetative growth and productivity of potatoes grown in desert soils / Karbala governorate.…”