Open Access Original Research Article

The Effects of Organic Fertilizers on the Growth and Yield of Amaranthus (Amaranthus hybridus L.) Grown in a Lath House

Samkeliso N. Dlamini, Michael T. Masarirambi, Paul K. Wahome, Tajudeen O. Oseni

Asian Journal of Advances in Agricultural Research, Page 1-10
DOI: 10.9734/ajaar/2020/v12i130068

Amaranthus is also known as African spinach is a good source of carotene, folic acid, vitamin C, calcium, iron and micronutrients. It is believed to have been used widely among hunter-gatherers. The objective of the experiment was to find the effects of organic fertilizers on amaranthus growth, development and yield. The experimental design was a Randomized Complete Block Design (RCBD) with four treatments and each replicated five times. Plant growth and yield increased (P<0.05) on amaranths fertilized with stillage. Kraal manure followed the stillage in terms of performance with the control (no fertilizer) recording the least significant effect on growth and yield of amaranthus. Because of stillage's impact on the growth and yield of amaranthus, it is recommended for a grower aiming for high yields of amaranthus using organic fertilizer.

Open Access Original Research Article

Assessment of Productivity and Income Generation from Rural Agricultural Systems in the Mid-country Wet Zone of Sri Lanka - A Case Study

P. G. A. S. Warnasooriya, W. A. P. Weerakkody, N.A.S.P. Nissanka, J. K. Vidanarachchi

Asian Journal of Advances in Agricultural Research, Page 11-20
DOI: 10.9734/ajaar/2020/v12i130069

Majority of the rural population in the wet mid elevations in Sri Lanka are predominantly engaged in Kandyan Homegardening (KHG) and smallholder tea cultivations (TS). Reports indicate that recent developments in this region are very low due to marketing, extension and production issues. The study was conducted to evaluate the recent changes in the agricultural productivity and other socio economic parameters of the households in a selected village belonging to Yatinuwara Divisional Secretariat in 2017. Information on social and family status, agricultural systems and income generation of a sample households (65%) were collected using a structured questionnaire. Results revealed that there was a trend of leaving agriculture by the young generation, resulting in just a 58.4% of the males (predominantly middle aged and old) for agriculture, mostly on part-time basis. Low percentage of women involvement in agricultural livelihoods clearly indicated their potential engagements in agricultural livelihoods in the future, bringing about a good solution for their unemployment issue. Nearly 76% families were engaged with KHGs whereas 36% and 7% were involved in TS and other cropping systems, respectively. The livestock sector was very much at a diminishing phase, limiting only to 7.8% of the households. The highest annual income was recorded by the TS, compared to KHG farmers. This could be justified with lower productivity of KHGs (compared to potential productivity of its major crop components). Majority of the households (38.2%) belongs to the lowest annual income category of less than Sri Lankan Rupees (LKR.) 50,000 (from agriculture). Hence a boost in agriculture will be an urgent need for improving the financial status and the living standards of the villagers. The outcome of the survey will be an eye-opening for policy makers and the institutional setup that are mandated for rural development in Sri Lanka.

Open Access Original Research Article

Impact of Foliar Application of Silicon and Selenium on Growth Characters, Yield, Physicochemical Characters, Oil Ingredients of Peanut (Arachis hypogaea L.) Variety Giza 6 under Different Planting Dates

Ahmed Khalaf, Mohamed Sh. Hassan, Hamady A. Ismaeil, Ahmed Awny

Asian Journal of Advances in Agricultural Research, Page 21-28
DOI: 10.9734/ajaar/2020/v12i130071

The experiment was conducted at the Agricultural Research Center in Upper Egypt 2016-2017. We were aiming to see the effect of spraying Si (100 ppm) and Se (50 ppm) 4 times under different planting on productivity and oil quality oil variety Giza 6 under different planting dates. In this research; Si and Se with early sowing (1May) applications produced significant increases Length and branching, Attributes of productivity, oil quality of variety Giza 6.Results show that oil content ranged from 55.48% to 60.10%, The percentage of oil decreases with the delay of planting dates. There is a variation in the refractive index (1.464-1.468) with different dates or Si and Se. The acidity rate increases with the delay of cultivation. The peroxide value decreases with the first reset. And lower iodine number with first replant It contains Oleic (55.49- 60.05%). The oleic is reduced with delay in planting, while linoleic increases with the delay of planting and spraying with silicon and selenium. The highest value of O/L ratio was with early implantation and spraying with silicon and selenium. Unsaturated fatty acids exceed saturated fatty acids with silicon and selenium spray. 

Open Access Original Research Article

Differential Response of Cotton Growth, Yield and Fiber Quality to Foliar Application of Spirulina platensis and Urea Fertilizer

Youssef G. Yanni, Amany A. Elashmouny, Abdelgawad Y. Elsadany

Asian Journal of Advances in Agricultural Research, Page 29-40
DOI: 10.9734/ajaar/2020/v12i130072

Aims: Evaluation if foliar spray of destructed cells of Spirulina platensis along with urea fertilizer can contribute to cotton (Gossypium barbadense L. cultivar Giza-94) plant growth, contents of photosynthetic pigments, seed cotton yield, seed index, earliness, lint percent, fineness (Micronair) and strength (Pressely).

Study Design: Application of ascending rates of N fertilizer in 3 mainplot treatments and foliar spray with destructed cells of Spirulina platensis in 4 subplot treatments (Contained a non-treated control), with 3 replications.

Place and Duration of Study: The Departments of Microbiology and Cotton Research, Sakha Agricultural Research Station, Kafr Elsheikh, Egypt (31º18′30″N & 30º48′14″E) during the two cotton cultivation seasons of years 2016 and 2017.

Methodology: Urea (46% N) at 96, 144 or 192 kg N/ha was applied in two equal doses as main-plot treatments. Spirulina platensis was grown and total proteins, contents of 16 amino acids and Fe, K, Mn and P of dried destructed cells were determined and used for foliar application in the rates of 6, 12 or 18 g cells/ha, used as sub-plot treatments. Area of each replicated sub-plot was 12.5 m2. Calcium super phosphate (15% P2O5), potassium sulphate (48% K2O) and Insecticides (when necessary) were supplemented as common treatments. 

Results: Application of destructed Spirulina increased the plant leaf area, chlorophyll a, b, carotenoids and gibberellin contents, plant height, fruiting branches, open bolls/plant, seed cotton yield and seed index after ginning, fiber length, fineness (Micronair) and strength (Pressely) comparing to the corresponding non-sprayed plants. Urea at 192 kg N/ha along with destructed Spirulina exhibited superiority as enhancers of plant growth, yield and fiber qualities.

Conclusion: The dual N/Spirulina combination expressed enhanced cotton growth, yield and qualities of fibers. The tested fertilization strategy is promising for enhanced cotton production economy.

Open Access Original Research Article

Effect of Zinc and Boron on Growth and Yield of Okra (Abelmoschus esculentus L.)

Nusrat Jahan, Md. Ashabul Hoque, Md. Rasal-Monir, Sumya Fatima, Mohammad Nurul Islam, Md. Belal Hossain

Asian Journal of Advances in Agricultural Research, Page 41-47
DOI: 10.9734/ajaar/2020/v12i130073

The study was carried out to find out the effect of zinc (Zn) and boron (B) on growth and yield of okra (BARI Dherosh 1). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The treatments of the experiment were, T0 (without Zn or B), T1 (20 kg Zn ha-1), T2 (30 kg Zn ha-1), T3 (10 kg B ha-1), T4 (20 kg B ha-1), T5 (20 kg Zn ha-1 + 10 kg B ha-1), T6 (20 kg Zn ha-1 + 20 kg B ha-1), T7 (30 kg Zn ha-1 + 10 kg B ha-1) and T8 (30 kg Zn ha-1 + 20 kg B ha-1) were undertaken to evaluate the best results of the study. The highest plant height was found in T8 (30 kg Zn ha-1 + 20 kg B ha-1) but the highest number of leaves plant-1 was recorded from T7 (30 kg Zn ha-1 + 10 kg B ha-1). On the other hand, the maximum leaf area index, SPAD value, mean fruit weight, fruit length, fruit diameter, fruit dry matter (%), number of fruits plant-1, fresh fruit weight plant-1 , fruit yield plot-1 and fruit yield ha-1 were found in T7 (30 kg Zn ha-1 + 10 kg B ha-1), while the control (T0) showed lowest performance for the respected parameters. It is strongly concluded that 30 kg Zn ha-1 with 10 kg B ha-1 combination may be helpful for okra cultivation in the field level to increase okra production.