Alleviating heat stress during early-season establishment of containerized strawberry transplants

BACKGROUND: Earlier planting under subtropical climatic conditions has been proposed as a means of increasing strawberry (Fragaria×ananassa Duch.) profitability but exposes transplants to heat stress. OBJECTIVE: Therefore, physical and chemical methods of ameliorating heat stress on the establishment, growth, and yield of containerized strawberry transplants were evaluated. METHODS: We used a split-plot design with white-on-black (white) mulch and black mulch as main plot treatments; and a factorial arrangement of transplant type and stress-prevention application was randomly assigned to the subplots. ‘Florida Radiance’ Jiffy plug and tray plug transplants were treated either with s-abscisic acid or with kaolin. RESULTS: White mulch resulted in greater plant vigor and vegetative growth than black mulch. Kaolin plus white mulch provided protection against heat stress as indicated by increased photosynthesis rates. At 4 weeks after transplanting, plant vigor and shoot growth were higher and flowering occurred earlier with Jiffy plug transplants than with tray plug transplants. Early marketable yields were higher with white mulch than with black mulch in three of the four site years. CONCLUSIONS: A combination of white mulch, Jiffy plug transplants, and kaolin application appears to have the best potential for alleviating heat stress during early-season strawberry establishment under subtropical conditions.

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Respons varietas-varietas gandum terhadap pemupukan silika organik di dataran medium

Kultivasi ◽

10.24198/kultivasi.v19i2.26746 ◽

2020 ◽

Vol 19 (2) ◽

Author(s):

Fiky Yulianto Wicaksono ◽

Amelia Ratnasari ◽

Rasyiqa Hasna Shabira ◽

Rhezaleta Eka Sutrisna ◽

Ruminta Ruminta

Keyword(s):

Heat Stress ◽

Harvest Index ◽

Growth And Yield ◽

Wheat Crop ◽

Panicle Length ◽

Wheat Varieties ◽

Area Index ◽

Main Plot ◽

Single Effect ◽

Plot Design

AbstrakPenanaman gandum dari dataran medium sampai ke rendah memiliki kendala, salah satunya yaitu cekaman suhu tinggi. Pemupukan silika merupakan usaha yang dapat dilakukan agar tanaman gandum tahan terhadap cekaman suhu tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh interaksi antara dosis pupuk silika yang terbuat dari abu ketel pabrik gula dan varietas gandum terhadap pertumbuhan dan hasil gandum pada dataran medium yang lebih panas dibandingkan dengan dataran tinggi. Penelitian ini dilaksanakan pada bulan Januari 2018 – April 2018 di kebun percobaan Ciparanje Fakultas Pertanian Universitas Padjadjaran, Jatinangor, pada ketinggian750 mdi atas permukaan laut. Rancangan percobaan yang digunakan adalah Rancangan Petak Terbagi dengan petak utama adalah varietas dan anak petak adalah dosis pupuk silika. Faktor varietas terdiri dari 3 taraf, yaitu varietas Dewata, Selayar, dan GURI-6; sementara faktor dosis pupuk silika terdiri dari 6 taraf, yaitu 50, 100, 150, 200, 250, dan 300 kg/ha. Semua perlakuan diulang sebanyak 2 kali. Pengamatan dilakukan pada komponen pertumbuhan dan hasil tanaman gandum. Hasil penelitian menunjukkan terdapat pengaruh interaksi antara varietas dan dosis pupuk silika terhadap persentase biji bernas dan kadar gluten. Pengaruh mandiri dosis pupuk silika taraf 100 kg/ha memberikan Indeks Luas Daun dan Indeks Panen lebih tinggi dengan nilai masing-masing 3,44 dan 0,38. Pengaruh mandiri varietas GURI-6 memberikan hasil paling baik pada karakter tinggi tanaman dan panjang malai, sebesar 70,44 cm dan 6,26 cm.Kata kunci : pupuk silika, cekaman, gandum AbstractWheat cultivation in medium or lowland can suffer heat stress. Silica fertilization is an effort to decrease heat stress on wheat crop. This study aims to find the interaction between silica fertilizer doses made from sugar mill ash and wheat varieties on growth and yield of wheat. The experiment was conducted on January 2018 until April 2018 in Ciparanje experimental field, Faculty of Agriculture, Padjadjaran University, Sumedang, at an altitude of 750 m above sea level. The Experiment used Split Plot Design which used wheat varieties as main plot and silica fertilizer doses as subplot. Main plot consisted of 3 levels of variety, there were Dewata, Selayar, and GURI-6; while subplot consisted of 6 levels of silica fertilizer dose, there were 50, 100, 150, 200, 250, and 300 kg/ha. All treatments were replicated twice. Observations were made on the components of growth and yield of wheat crop. The results showed interaction effect between varieties and silica fertilizer dosages on the percentage of filling grain and gluten content. The single effect of silica fertilizer level of 100 kg/ha gave a higher Leaf Area Index and Harvest Index values, were 3.44 and 0.38. GURI-6 variety gave the best results on plant height and panicle length, were 70,44 cm and 6,26 cm.Keywords: silica, stress, wheat

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Performance of Wheat as Affected by Different Irrigation Levels and Sowing Dates

The Agriculturists ◽

10.3329/agric.v14i2.31352 ◽

2017 ◽

Vol 14 (2) ◽

pp. 77-85

Author(s):

Md Sohel Mahmud ◽

Md Jafar Ullah ◽

Md Abdullahil Baque ◽

Lutfun Naher ◽

Sayed Mohammad Mohsin

Keyword(s):

Grain Yield ◽

Maximum Yield ◽

Growth And Yield ◽

Sowing Time ◽

Sowing Dates ◽

Two Factors ◽

Main Plot ◽

Irrigation Levels ◽

1000 Grain Weight ◽

Plot Design

The experiment was conducted to determine the effect of irrigations and sowing dates on growth and yield performance of wheat in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period of November 18, 2012 to March 30, 2013. The experiment was comprised of two factors, viz. factor A: two irrigations namely irrigation (I) and no irrigation i.e. control (I0), and factor B: three sowing dates such as S1: 1st sowing on 18 November, S2: 2nd sowing on 03 December and S3: 3rd sowing on 18 December. The experiment was laid out in a split plot design with three replications. Irrigation was assigned in the main plot, while sowing time was in the sub-plots. Data on grain yield and different yield contributing characters were taken after harvest. Results indicated that the highest grain yield was obtained with I (2.915 t ha-1) and S1 (2.983 t ha-1). The interaction of irrigation (I) and sowing on 18 November (S1) showed the maximum yield (3.387t ha-1), spike length (17.08 cm), 1000 grain weight (43.4 g), spikelets spike-1 (20.03) and grain spike-1 (65.58) of wheat.The Agriculturists 2016; 14(2) 77-85

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Response of Groundnut (Arachis hypogaea L.) to Lime and Different Levels of Sulphur

International Journal of Bio-resource and Stress Management ◽

10.23910/1.2020.2162a ◽

2020 ◽

Vol 11 (6) ◽

pp. 585-589

Author(s):

Imnatemjen Aier ◽

◽

D. Nongmaithem ◽

Keyword(s):

Arachis Hypogaea ◽

Growth And Yield ◽

Yield Attributes ◽

Pod Yield ◽

Arachis Hypogaea L ◽

Stover Yield ◽

Main Plot ◽

Different Levels ◽

Kernel Yield ◽

Plot Design

A field experiment was conducted in the Experimental Research Farm of School of Agricultural Sciences and Rural Development (SASRD), Nagaland University during the kharif season 2018. Groundnut variety ICGS-76 was sown @ 70 kg ha-1 for 60×20 cm2 spacing. The experiment was laid in split plot design with three replications. The main plot treatments consisted of two lime levels: lime @ 0 t ha-1 and lime @ 3 t ha-1 while the sub- plot treatments consisted of five sulphur levels: sulphur @ (0 kg ha-1, 10 kg ha-1, 20 kg ha-1, 30 kg ha-1 and 40 kg ha-1 along with recommended dose of fertilizer at 20:60:40 kg N, P2O5 and K2O ha-1 respectively in the form of diammonium phosphate and murate of potash. The results showed that application of lime @ 3 t ha-1 gave higher growth and yield attributes compared to no lime and also application of sulphur @ 40 kg ha-1 gave higher growth and yield attributes compared to lower doses of sulphur though there was only slight increase in the attributes between each successive doses of sulphur. Overall application of lime and sulphur increased all the yield attributes of groundnut, where the highest number of pods plant-1, seeds pod-1, 100 kernels weight, pod yield, kernel yield and stover yield were recorded when treatment was done with lime @ 3 t ha1 and sulphur @ 40 kg ha-1.

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Effectiveness of blower and HVLS fan in feedlot to performans of brahman, belmont red and charolais cattle

E3S Web of Conferences ◽

10.1051/e3sconf/20185200010 ◽

2018 ◽

Vol 52 ◽

pp. 00010

Author(s):

David Isaac Yasin ◽

Ma’ruf Tafsin ◽

Simon P Ginting

Keyword(s):

Heat Stress ◽

Daily Weight Gain ◽

Feed Consumption ◽

Feed Conversion ◽

Feed Cost ◽

Charolais Cattle ◽

Main Plot ◽

The Impact ◽

Plot Design ◽

Cattle Performance

The purpose of this study is to determine the impact of heat stress on Brahman Cross cattle performance which is maintained by feedlot with three treatments (non using fan, blower fan and HVLS fan) using split plot design, Giving the fan is treated as the main plot factor, while the cattle is treated as a plot factor factor (sub plot factor). Knowing the financial value of each treatment: feed consumption, daily weight gain, feed conversion, feed cost, cost per gain of Brahman, Belmont red and Charolais is fattened in feedlot. The result showed that using HVLS fan is most effective to cattle performance than blower fan and non using fan for belmont red and charolais cattle.

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Effects of Incorporating Biochar into the Soil Using Power Tiller and Ox-Plough

Sustainable Agriculture Research ◽

10.5539/sar.v6n4p93 ◽

2017 ◽

Vol 6 (4) ◽

pp. 93

Author(s):

Masauso Ndhlovu ◽

Nicholas Kiggundu ◽

Joshua Wanyama ◽

Noble Banadda

Keyword(s):

Water Retention ◽

Scale Up ◽

Growth And Yield ◽

Soil Water Retention ◽

Negative Effects ◽

Application Rates ◽

Significant Difference ◽

Main Plot ◽

Power Tiller ◽

Plot Design

Existing knowledge about biochar is derived from trials where biochar incorporation into the soil is done by hands, a practice too tedious to scale-up to commercial levels. To enhance scalability, biochar incorporation needs to be integrated into conventional mechanised tillage systems. This study aimed at assessing the effects of incorporating biochar by power tiller and ox-plough on soil water retention, maize growth and yield. A 2 x 3 factorial experiment was conducted in a split-plot design with biochar incorporating method as a main plot factor and biochar level as subplot factor, on ferralsols of central Uganda. Incorporation methods were by power tiller and ox-plough with hand mixing in planting basins as a control, while levels of biochar were 0 and 10 t ha-1 application rates. Data was analysed using two-way ANOVAs in Minitab for significant differences among incorporation methods. Results showed that incorporating biochar by power tiller significantly increased water retention effect of biochar by 27.5% (p < 0.05), while no significant effect was observed (p ≥ 0.05) when incorporated by ox-plough, compared to hand mixing. No significant difference on growth and yield was observed (p ≥ 0.05) as a result of incorporating biochar by power tiller and ox-plough instead of hands in planting basins. These findings suggest that biochar incorporation can be scaled-up, to commercial levels, through the use of power tiller and ox-plough, without negative effects on biochar performance. It is recommended that promotion of biochar technology encompasses the use of power tillers and ox-ploughs to enhance scalability.

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Performance of Hybrid Rice (Bio-453) In Variation of Spacing and Number of Seedling Per Hill

Bangladesh Agronomy Journal ◽

10.3329/baj.v22i1.44928 ◽

2020 ◽

Vol 22 (1) ◽

pp. 27-37

Author(s):

D Chowdhury ◽

M Biswas ◽

MNH Miah ◽

P Mandal ◽

MS Hossain

Keyword(s):

Hybrid Rice ◽

Research Work ◽

Maximum Yield ◽

Growth And Yield ◽

Plant Spacing ◽

Rice Line ◽

Biological Yield ◽

Main Plot ◽

1000 Grain Weight ◽

Plot Design

Hybrid rice production can ensure to get more yields per unit land. The research work was carried out to evaluate the effect of number of seedling hill-1 and spacing on the growth and yield of hybrid rice line Bio-453. The experiment was laid out in a split-plot design with 3 replications at the field of Agronomy and Haor Agriculture Department of Sylhet Agricultural University, under the AEZ 20 in Kharif-II (Aman) season of 2013. Number of seedling hill-1 was assigned in the main plot and plant spacing in the sub-plot. Two levels of seedling hill-1 viz. NS1 (1 seedling hill-1) and NS2 (2 seedlings hill-1) and five levels of plant spacing viz. Sp1 (15 cm X 15 cm), Sp2 (15 cm X 20 cm) and Sp3 (20 cm X 20 cm), Sp4 (20 cm X 25 cm) and Sp5 (20 cm X 30 cm) were the treatments. Number of seedling hill-1 and plant spacing showed significant effect in yield and yield contributing parameters except days to maturity, plant height, 1000-grain weight, total tillers hill-1, number of effective tillers hill-1, harvest index and grains panicle-1. Maximum grain yield (9.43 t ha-1), straw yield (16.27 t ha-1) and biological yield (25.70 t ha-1) were obtained from 1 seedling hill-1 (NS1) with the closest spacing 15 cm X 15 cm Therefore, one seedling hill-1 with 15 cm distance for plant and row to row distance could ensure maximum yield of hybrid rice line Bio-453. Bangladesh Agron. J. 2019, 22(1): 27-37

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Effects of Environmental Stresses (Heat, Salt, Waterlogging) on Grain Yield and Associated Traits of Wheat under Application of Sulfur-Coated Urea

Agronomy ◽

10.3390/agronomy11112340 ◽

2021 ◽

Vol 11 (11) ◽

pp. 2340

Author(s):

Adil Altaf ◽

Xinkai Zhu ◽

Min Zhu ◽

Ma Quan ◽

Sana Irshad ◽

...

Keyword(s):

Salt Stress ◽

Heat Stress ◽

Crop Yield ◽

Abiotic Stresses ◽

Climatic Conditions ◽

Growth And Yield ◽

Release Time ◽

Wheat Crop ◽

Spad Value ◽

Coated Urea

Abiotic stresses, such as heat, salt, waterlogging, and multiple-stress environments have significantly reduced wheat production in recent decades. There is a need to use effective strategies for overcoming crop losses due to these abiotic stresses. Fertilizer-based approaches are readily available and can be managed in all farming communities. This research revealed the effects of sulfur-coated urea (SCU, 130 kg ha−1, release time of 120 days) on wheat crops under heat, salt, waterlogging, and combined-stress climatic conditions. The research was done using a completely randomized design with three replicates. The results revealed that SCU at a rate of 130 kg of N ha−1 showed a significantly (p ≤ 0.05) high SPAD value (55) in the case of waterlogging stress, while it was the lowest (31) in the case of heat stress; the control had a SPAD value of 58. Stress application significantly (p ≤ 0.05) reduced the leaf area and was the highest in control (1898 cm2), followed by salt stress (1509 cm2), waterlogging (1478 cm2), and heat stress (1298 cm2). A significantly (p ≤ 0.05) lowest crop yield was observed in the case of heat stress (3623.47 kg ha−1) among all stresses, while it was 10,270 kg ha−1 in control and was reduced up to 35% after the application of heat stress. Among all stresses, the salt stress showed the highest crop yield of 5473.16 kg ha−1. A significant correlation was observed among growth rate, spike length, yield, and physiological constraints with N content in the soil. The SCU fertilizer was the least effective against heat stress but could tolerate salt stress in wheat plants. The findings suggested the feasibility of adding SCU as an alternative to normal urea to alleviate salt stresses and improve wheat crop growth and yield traits. For heat stress tolerance, the applicability of SCU with a longer release period of ~180 days is recommended as a future prospect for study.

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Aplikasi Indigenous Microorganism (Em-4) dan Pupuk Kompos Terhadap Pertumbuhan dan Produksi Tanaman Cabai Merah (Capsicum annum L.) pada Tanah Ultisol

Jurnal Agroekoteknologi Tropika Lembab ◽

10.35941/jatl.1.2.2019.1977.114-118 ◽

2019 ◽

Vol 1 (2) ◽

pp. 114

Author(s):

Ratna Shanti

Keyword(s):

Economic Value ◽

Fruit Yield ◽

Low Fertility ◽

Growth And Yield ◽

Quadratic Regression ◽

Indigenous Microorganism ◽

Compost Application ◽

Main Plot ◽

The Relationship ◽

Plot Design

Red Chilli is commodity of vegetable that has high economic value, but still has slow productivity. The objective of this study was identify the effect of indigenous microorganism (EM 4) application and compost to increased the growth and yield of Red Chilli Plant (Cappcicum annum L) on Ultisol. Field trial was conducted on Ultisols in Horticulture Experimental Station, BatuahLoajanan, Kutai Kartanegara. The soil was characterized by low fertility status. The amount of organic matter and microbial acivity are very low. This trial was started on January until April 2017 using Split Plot Design with three replications Main plot consisted of two levels treatment i.e. without EM-4 (E0) as control and Effective Mikroorganisms-4 (E). Sub-plot was four rates of organic compost i.e. 0, 10, 20 and 30 tons ha-1 and chili was used as test plant.Results indicated that EM-4 treatment showed a significant effect on fruit yield of chilli. It increased the fruit yield 38 percent compare to control. Compost application significantly increased on fruit yield. The relationship between unfermented compost rate and fruit yield shows a linear regression YE0 = 1.699 + 0.047 X (r = 0.95) and quadratic regression for EM-4 fermented compost YE1 = 1,175 + 0,319 X – 0.007 X2(R2 = 0.603). Optimum compost rate was 23 ton.ha-1.To increased fruit yield of chilli, EM-4 fermented compost should be applied into and it can decreased compost rate application.

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Growth Response and Yield of Three Shallot Varieties on The Various Mixed of UREA + ZA in Ultisol Soil

TROPICAL WETLAND JOURNAL ◽

10.20527/twj.v7i2.95 ◽

2021 ◽

Vol 7 (2) ◽

pp. 47-51

Author(s):

Lily Marlina ◽

Joko Purnomo ◽

Hilda Susanti

Keyword(s):

Plant Height ◽

Interaction Effect ◽

Growth Response ◽

Growth And Yield ◽

Affected Plant ◽

Split Plot ◽

Main Plot ◽

Number Of Leaves ◽

Four Levels ◽

Plot Design

This study aimed to: (1) identify the interaction effect between varieties and mixed doses of urea + ZA on the growth and yield of shallots in Ultisol soil; (2) to identify the effect of each shallot varieties and the dosage mixture of urea + ZA which produce the highest yield in Ultisol soils. The research was conducted from April to June 2019 in Tungkaran Village, Martapura, with a split plot design. The main plot was shallot varieties (V) with three levels, namely Biru Lancor (v1), Bima Brebes (v2), and Super Philip (v3). Subplots were a mixture of urea + ZA (P) with four levels, namely 0 kg urea + 600 kg ZA (p1), 100 kg urea + ZA 400 kg (p2), 200 kg urea + 200 kg ZA (p3), and 300 urea kg + ZA 0 kg (p4). Each experiment was repeated three times. Therefore, there were 36 experimental units. Observation parameters included plant height, number of leaves per clump, number of bulbs per clump, fresh bulbs' weight per clump, and yield of stored dry bulbs. The results showed that the Bima Brebes variety (v2) had a significant effect on plant height, number of leaves, number of bulbs per clump, the weight of fresh bulbs per clump, and yield of stored dry bulbs. The mixture of 200 kg urea + 200 g ZA (p3) significantly affected plant height, number of leaves, number of tubers per clump, the weight of fresh tubers per clump, and yield of stored dry tubers.

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Respons fisiologi pertumbuhan dan hasil tiga genotip jawawut terhadap cekaman kekeringan

Jurnal Agro ◽

10.15575/4590 ◽

2019 ◽

Vol 6 (1) ◽

pp. 35-48

Author(s):

Yuyun Yuwariah ◽

Sheli Mustikasari Dewi ◽

Warid Ali Qosim ◽

Anne Nuraini

Keyword(s):

Field Capacity ◽

Growth And Yield ◽

Food Sources ◽

Experimental Station ◽

Physiological Processes ◽

Best Response ◽

Split Plot ◽

Main Plot ◽

Three Stages ◽

Plot Design

Jawawut merupakan salah satu tanaman pangan lokal Indonesia yang belum banyak dikembangkan dan dimanfaatkan sebagai sumber pangan. Penelitian ini bertujuan untuk mendapatkan genotip jawawut yang memberikan pengaruh paling baik terhadap pertumbuhan dan hasil pada berbagai tingkat pemberian air di rumah plastik. Penelitian dilaksanakan pada bulan Juni sampai dengan September 2017 di Kebun Percobaan Fakultas Pertanian, Universitas Padjadjaran. Penelitian menggunakan Rancangan Petak Terbagi (Split Plot Design) dengan 3 ulangan. Petak utama terdiri dari tiga macam genotip yaitu genotip 44, 46, dan 48. Anak petak terdiri dari tiga taraf kapasitas lapang yaitu 75%, 50% dan 25%. Hasil penelitian menunjukkan perlakuan pemberian air 25% kapasitas lapang berpengaruh paling buruk terhadap proses fisiologis pertumbuhan dan hasil tiga genotip jawawut. Genotip 44 dan 46, pada pemberian air 50 % KL menghasilkan konduktan stomata terbaik. Genotip 46 dan 48 memberikan pengaruh paling baik terhadap proses fisiologis pertumbuhan dan hasil jawawut yaitu jumlah anakan per rumpun.ABSTRACTMillet is one of Indonesia's local food crops that has not been widely developed as food sources. The purpose of this study was to obtain the genotypes of millet which gave the best effect on the growth and yield at various levels of water supply in the plastic house. The study was conducted from June to September 2017 at the Experimental Station of the Faculty of Agriculture, Universitas Padjadjaran. The research used the Split Plot Design with three replications. The main plot factor consisted of three levels of treatment; genotypes 44, 46, and 48. The subplot factor consisted of three stages of different treatment of the field capacity; 75%, 50% and 25%. The results showed the treatment of 25% water to field capacity had the worst effect on the physiological process of growth and yield of three millet genotypes. Genotypes 44 and 46, at 50% field capacity, produced the best stomatal conductance. Genotype 46 and 48 showed the best response to the physiological processes for the number of tillers.

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