scholarly journals Effect of different irrigation intervals on growth and yield of chilli crop grown in sandy soil

2021 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
M. S. Fathima Sahana ◽  
M. Sugirtharan
Keyword(s):  
2016 ◽  
Vol 30 (1) ◽  
pp. 47-55 ◽  
Author(s):  
Mahmoud M. Ibrahim ◽  
Ahmed A. El-Baroudy ◽  
Ahmed M. Taha

Abstract Field experiments was conducted to determine the best irrigation scheduling and the proper period for injecting fertilizers through drip irrigation water in a sandy soil to optimize maize yield and water productivity. Four irrigation levels (0.6, 0.8, 1.0 and 1.2) of the crop evapotranspiration and two fertigation periods (applying the recommended fertilizer dose in 60 and 80% of the irrigation time) were applied in a split-plot design, in addition to a control treatment which represented conventional irrigation and fertilization of maize in the studied area. The results showed that increasing the irrigation water amount and the fertilizer application period increased vegetative growth and yield. The highest grain yield and the lowest one were obtained under the treatment at 1.2 and of 0.6 crop evapotranspiration, respectively. The treatment at 0.8 crop evapotranspiration with fertilizer application in 80% of the irrigation time gave the highest water productivity (1.631 kg m−3) and saved 27% of the irrigation water compared to the control treatment. Therefore, this treatment is recommended to irrigate maize crops because of the water scarcity conditions of the studied area.


2017 ◽  
Vol 2 (2) ◽  
pp. 064
Author(s):  
Wiji Safitri ◽  
Endang Sulistyaningsih ◽  
Benito Heru Purwanto ◽  
Stephen Harper

Nitrogen was a key component for increasing yield and quality of vegetables like shallots. The growth and development of plants were influenced by nitrogen form. Common plants preferred nitrate for growth, but the enormity preference varies within plant species and other environmental factors. The purpose of this experiment was to study the effect of ammonium:nitrate ratio in sandy soil to growth and yield of shallot (Allium cepa L. Aggregatum group). The experiment had been conducted in August-October 2015 in the sandy land on Samas Beach, Bantul, Yogyakarta, Indonesia. The research was arranged in a Split-Plot design. The main plot was the source of nitrogen (NH4+; NO3-; NH4+: NO3- 1:1; NH4+: NO3- 1:2; and NH4+: NO3- 2:1) and the subplot was cultivars (Crok Kuning, Tiron, and Bima Brebes). Each subplot covered an area of 2.5 m² (2.5 m x 1 m) with three blocks as replications. Shallot bulbs were planted in sixth-row, spacing 20 cm between rows and 15 cm within rows. The dose was applied according to the recommendation of BPTP (urea 200 kg ha-1, ZA 250 kg ha-1, SP-36 150 kg ha-1, and KCl 150 kg ha-1) 144.5 kg N ha-1. Ammonium:nitrate ratio influenced shallot growth in sandy soil through number of leaves at maximum vegetative phase and its leaf area. The NH4+: NO3- 1:2 ratio gave the best result in dry weight of leaves following bulb dry weight than other ratio. Nevertheless, ammonium:nitrate ratio had no significant influence on bulb dry weight (ton ha-1).


2019 ◽  
Vol 11 (24) ◽  
pp. 7049 ◽  
Author(s):  
Hafiz Muhammad Rashad Javeed ◽  
Rafi Qamar ◽  
Atique ur Rehman ◽  
Mazhar Ali ◽  
Abdul Rehman ◽  
...  

Unavailability of balanced nutrients in nutrient-deficient soils is the key reason in reduced yields of spring maize. After application to soil, most of the phosphorus (80–90%) is lost in the environment because of runoff losses and chemically bonding. So, this makes the phosphorus unavailable for plant use. However, soil microorganisms may provide a biological rescue system which is able to solubilize the soil-bound phosphorus (p). Keeping this in view, the present study is designed to meet the following objectives; (1) to improve physico-chemical properties of soil (e.g., soil water retention, soil enzyme activities), and (2) to improve growth and yield of spring maize (cv. Hybrid YSM-112) through the inoculation of phosphorus solubilization bacteria (PSB). A pot experiment was carried out with the following treatments; T1: control (uninoculated control, CT), T2: inoculation with PSB (Enterobacter sakazakii J129), T3: recommend level of NPK fertilizers (RNPK), T4: PSB + RNPK fertilizers, T5: rock phosphate (RP), T6: PSB + RP. Results showed that the addition of PSB together with RNPK improved the yield and yield-related characteristics of spring maize grown in sandy soil. Moreover, it also enhanced dry mater characteristics and maize grain quality. Soil fertility in the context of P-solubilization, soil organic acids, soil organic matter, enzyme activities, PSB colony, and rhizosphere moisture contents were significantly improved with PSB inoculation together with recommended dose of NPK fertilizers (RNPK) compared to PSB alone, rock phosphate (RP) alone, or PSB together with rock phosphate and control treatment. Maize digestibility attributes such as DM, CP, CF, EE (by 35%, 20%, 33%, and 28% respectively) and grain quality such as NPK, Mg, Ca, Fe, Mn, Cu, and Zn (by 88%, 92%, 71%, 68%, 78%, 90%, 83, 69%, 92%, 48%, and 90% respectively) were improved compared to control. In conclusion, improvement in maize crop yield and soil characteristics are more prominent and significant when RNPK is supplemented and inoculated. The present study suggests that PSB, together with RNPK, would improve the maize plant growth and soil fertility in sandy soil.


2006 ◽  
Vol 1 (4) ◽  
pp. 322-330 ◽  
Author(s):  
Mahmoud . ◽  
M. Shaaban . ◽  
Abdalla . ◽  
Fouad El-Sayed . ◽  
Abou El-Nour . ◽  
...  

2014 ◽  
Vol 2 (6) ◽  
pp. 257-264 ◽  
Author(s):  
Abdul Aziz Khalid ◽  
Henry Oppong Tuffour ◽  
Mensah Bonsu ◽  
Thomas Adjei-Gyapong ◽  
Awudu Abubakar ◽  
...  

1992 ◽  
Vol 32 (2) ◽  
pp. 217 ◽  
Author(s):  
EC Winston ◽  
J Littlemore ◽  
P Scudamore-Smith ◽  
PJ O'Farrell ◽  
D Wiffen ◽  
...  

The effects of nitrogen (N) and potassium (K) on coffee (Coffea arabica L.) growth and yield in a shallow sandy soil in North Queensland were studied over 5 years following field establishment. High rates of N (416 and 624 kg/ha) applied frequently were necessary for rapid growth and yield of cvv. Kairi Typica (K2), Caturra Rojo (CR33), Catuai Rojo (CR35), and Bourbon Red (B61). Although data were not significant, mean yields with 416 and 624 kg N/ha were greater than with 208 kg/ha by 124 and 145% in 1986, by 12 and 26% in 1987, and by 38 and 31% in 1988. Increasing rates of K (63, 126 and 189 kg K/ha) did not affect growth and did not significantly increase yield in the later stages of the experiment. Neither N nor K had any affect on green bean size or time of berry maturity. CR35 was the highest yielding cultivar (3752 kg/ha of green bean in 4 years of cropping) and B61 the lowest (2067 kg/ha). Height and girth were ranked K2 > CR35 > CR33 > B61. B61 also had significantly fewer and shorter longest primary laterals. CR35 ripened later than other cultivars, while B61 produced the highest percentage of large beans, and K2 the highest percentage of small beans. Preliminary recommendations for coffee growers in this region are 100 kg N/ha in year 1, increasing to 400 kg/ha in year 4; and 80 kg K/ha in year 1, increasing to 320 kg K/ha in year 4. Monthly, rather than quarterly, applications are recommended.


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