Effect of nano-fertilizer on growth traits of potato cultivars grown under water stress

Abstract

The experiment was conducted in the field of the Plant Production Techniques Department at the Technical College of Musayyib for autumn season of 2020. The first experiment included three factors. The first factor was the use of four cultivars (Burren, Sifra, Arizona, Royal) and symbolized by the symbol (C1, C2, C3, C4). ), the second factor has four levels of water stress (without water stress, water stress during the germination stage starting from the date of planting to 30 days of planting, water stress during the vegetative growth stage starting from the end of the germination stage until 45 days of planting, water stress during The stage of tuber formation and starts from the end of the vegetative growth stage until 60 days of planting) and is symbolized by the symbol (W0, W1, W2, W3). The third work included spraying three levels of nano fertilizer (khazra) which are (0, 1, 2) g. L^-1 and its symbol (S0, S1, S2), and the experiment was implemented according to the RCBD (Randomized complete block design) with three replicates, and the transactions were distributed randomly within each replicate. The results were analyzed according to the Least Significant Difference (L.S.D) test at the level of probability. 5%The cultivars had a significant effect on the studied traits, the two Burren cultivars significantly excelled on the other cultivars and gave the highest values for traits of plant height 57.70 cm, number of leaves 48.00 leaves. plant^-1, chlorophyll 50.39 spade, number of tubers 10.16 tubers. plant^-1, The fresh weight of the tubers was 511.29 gm, the dry weight of the tubers was 132.94 gm.The two treatments of stress during the tuber formation stage (W3) and stress during vegetative growth (W2) had a negative effect on reducing the values of most of the studied traits, while a treatment without stress (W0) was recorded, and gave the highest values for most of the traits.The triple interaction treatment consisting of (Burren variety, treatment without stress, and spraying at a concentration of 2g.l^-1) excelled significantly and recorded the highest values for the characteristics of plant height 66.33 cm, number of leaves 54.95 leaves, plant^-1, chlorophyll 51.44 spad, number of tubers 12.54 tubers.plant^-1, the fresh weight of the tubers 828.31 gm, the dry weight of the tubers 215.36 gm