Evaluation of Some Multinutrient Fertilizers for Tomato and Squash Rotation and Soil Health Under Different Irrigation Systems.

Abstract

Two field experiments (tomato and squash) in rotation were conducted at Sakha Agricultural Research Station Farm, Kafr El-Sheikh Governorate, Egypt during the summer and the autumn seasons of 2008 and 2009 to evaluate the effects of some multinutrient fertilizers for long term cultivation under two irrigation systems on crop yield and soil quality. The experiments were carried out under wire proof green house conditions. Tomato (Lycopersicon esculentum L) seedlings under the local name of Alessa was planted . Two irrigation systems and nine fertilizer treatments were examined . Split plot design was used with four replicates. The main plots were assigned by two irrigation systems (surface furrow irrigation, and drip irrigation). The sub plots were randomly assigned by nine fertilizer treatments of :-1-control (without fertilization), 2-recommended dose of N and P (200 kg N and 13.08 kg P fed -1 ), 3recommended dose of P and K (13.08 kg P and 41.5 kg K fed .-1 ), 4-recommended dose of N and K, 5-multinutrients 20 -20 -20 +1% Mg + micro nutrients, 6multinutrient 20 -20 -20 + 1% Mg, 7-multinutrient 20 -20 -20 NPK as compound fertilizer (200 kg fed .-1 ), 8-commercial multinutrient 20 -20 -20 NPK as mixed fertilizer and 9-recommended dose of N. P and K (as urea, superphosphat and potassium sulphate). Squash was transplanted on the same design without fertilization depending on the previous fertilizer residuals. The obtained results can be summarized as :-surface irrigation gave higher tomato fruit yield of 32178.3 kg fed -1 , the highest dry fruit weight of 2413.37 kg fed -1 , higher P %, P content of the fruits (0.257% and6.2 kg fed -1 ) respectively, higher values of K % in the shoot and fruits ( 0.9 and 2.7%) , NUE, PUE, KUE and the highest squash fruit yield of 10202.67 kg fed -1 . Drip irrigation produced the highest N % in the shoot and fruits of 0.602 and 0.912 % respectively. Surface irrigation generally decreased available N, K in the soil after squash while available P was increased compared to the values before planting. The highest tomato fruit yield of 31105.2 kg fed -1 , N% in tomato shoot of 0.677%, NUE155.5, PUE 814.0 and KUE 622.1 were obtained with T5.

Simulation of Water Stress and Climate Change Impacts on Canola Yield, Seed Quality and Water Productivity at North Delta, Egypt محاکاة تأثیرات تغیر المناخ والإجهاد المائی على محصول وجودة بذور الکانولا وانتاجیة وحدة المیاه فی شمال الدلتا، مصر.

“…Egypt faces trouble in resources of irrigation water due to its water budget is fixed, so saving irrigation water is the major step of the Egyptian government strategy as well as raising agricultural productivity from the unit area with the minimum quantity of irrigation water. Generally, there is a pressing need to increase crop water productivity (WP), because of continuing population increment and the acute declining in water resources allocated to purposes of agriculture (El-Hamdi et al 2011). To increase the territory of irrigated land and thus increasing overall crop creation in Egypt utilizing the same quantity of available water, options that save water and enhance water productivity (WP) require to be developed.…”

Effect of Foliar Application with Salicylic Acid (Potasal), Mineral Phosphorus Levels and Inoculation Tomato Plant with Soluble Phosphorus Bacteria on Growth, Productivity and Reducing Disease Infect with Tomato Curly Top Virus (TCTV)

“…Phosphorus is an essential component of nucleic acid, phospholipids and energy rich phosphate compounds, thus, it plays crucial role in root growth, fruit and seed development, disease resistance, utilization of sugar and starch and transporting of genetic traits (Khan., 2009). Tesfaye (2008) found that application of 120 kg P 2 O 5 /ha, resulted in superior tomato fruit yield, while Qiang and Monica (2017) concluded that 75 kg P 2 O 5 /ha was sufficient to grow tomato crop during the winter season in calcareous soil with 13-15 mg kg -1 DTPA extractable P. Multinutrients 20/20/20 increased tomato fruit yield, N% in shoots, N, P and K use efficiency (El-Hamdi., 2011). Pigna .…”

Effect of Nitrogen Fertilization Lvels on Potassium Absorption by Some Wheat Varieties in Northern Delta Region

“…Much attention is being given recently (after building the High Dam) to the efficient use of potassium fertilizer in Egypt (Keleg and Abdel-Halim,1975). Many investigators (Mohamed, 2005;Mahdy, 2009;Knany, et al 2009 andEl-Hamdi,et al 2011) stated that the crops significantly increased as potassium fertilizer added to crops in Egypt.…”