Response of Potato Growth and Yield to Some Stimulating Compounds.

Abstract

Two field experiments were carried out at the private Farm in Basandela Village, Belqas, Dakahlia Governorate during the two successive summer seasons of 2012 and 2013 to study the response of potato (c.v. Valor) growth and yield to some stimulating compounds i.e, Thiamine(V.B1)100 ppm, Riboflaphine(V.B2)100 ppm, Ascorbic acid (V.C)100 ppm, Decenyl succinic acid (DSA) 400 ppm, Arginine acid 400 ppm, Proline acid 400 ppm and Micronutrients (Fe, Zn and Mn) each 75 ppm. Results indicated that plant height and number of leaves/plant were significantly increased with application of Decenyl saccinic acid (DSA) compared with other treatments in both seasons of study. Number of branches/ plant and number of stoolens /plant were significantly increased with application of proline acid compared with the control. Leaf area was significantly increased with foliar application of Ascorbic acid in both seasons of study. Total yield (tones / fed.), average tuber weight and marketable yield of tubers were increased significantly with application of Ascorbic acid (100 ppm) followed by the Arginine acid compared with other treatments. The foliar application of Arginine acid increased the content of tuber from N%,P% and K% in both seasons of study compared with the other treatments. On the other hand, all treatments significantly decreased the content of No3 = and No2 = in the tubers at harvest compared with the control treatment while, the lowest values of No3 = and No2 = had been obtained after the foliar application of Arginine acid in both seasons. Therefore, this treatment could be recommended for raising potato production and quality under similar conditions to this work.

Amino Acids Sources and Chitosan Enhance Cauliflower Yield and Quality under Heat Stress

“…The higher content of K in plant tissue explains the higher chemical and physical quality of the cauliflower heads due to the presence of K which acts on photosynthate translocation from the leaves to the storage organs. These results come along with many previous studies which have proven that amino acids can directly or indirectly affect the vital activities of plants, as well as amino acids, play a big role in increasing the chlorophyll content in plants 31,32 . The foliar application of amino acids caused an increment of N, P, K and other micro-elements 31,32 .…”

“…These results come along with many previous studies which have proven that amino acids can directly or indirectly affect the vital activities of plants, as well as amino acids, play a big role in increasing the chlorophyll content in plants 31,32 . The foliar application of amino acids caused an increment of N, P, K and other micro-elements 31,32 . Shekari and Javanmardi 33 found that foliar application of amino acid at suitable concentration had positive effects on the physical and chemical properties of broccoli plants.…”

Effect of some Stimulants on Productivity of Pea (Pisum sativum L.) under High Temperature Stress Conditions

“…It is reported that proline has significant function in stabilizing osmotic effects by balancing of ion concentrations such as Na, K, Mg, and Ca in strengthening the cell wall and in other enzymatic actions (Iba, 2002). Gouda et al (2015) on potato and El-Saadony et al (2017) on pea, found that spraying plants with proline at 100 ppm gave the best growth and yield than unsprayed plants.…”

Effect of some Bio-stimulants on Growth, Yield and Bulb Quality of Garlic Grown in Newly Reclaimed Soil, New Valley-Egypt

“…Ascorbic acid has a wide range of important roles in plant such as photoprotection, regulation of photosynthesis, affects nutritional cycle's activity, electron transport system, as antioxidant defense and a cofactor for a large number of key enzymes in plants, developmental senescence, programmed cell death and responses to pathogens (Blokhina et al, 2003). Foliar application of ascorbic acid previously increased plant height, leaves number, dry weight of plant and total yield (El-Sayed, 1991) on potato, (El-Morsy et al, 2010) on garlic and (Gouda et al, 2015) on potato, and increased bulbing ratio as well as average bulb weight and diameter and clove weight (El-Morsy et al, 2010) on garlic.…”