scholarly journals Thermal indices in relation to crop phenology and fruit yield of apple

MAUSAM ◽  
2022 ◽  
Vol 63 (3) ◽  
pp. 449-454
Author(s):  
MOHAN SINGH ◽  
H.S. BHATIA
Keyword(s):  
Field Experiments ◽  
Research Station ◽  
Bud Burst ◽  
Thermal Indices ◽  
Thermal Index ◽  
Fruit Setting ◽  
Different Seasons ◽  
Kullu Valley ◽  
The Mean ◽  
Horticultural Research

Field experiments were conducted on gravel sandy soil of research farm of Horticultural Research Station, Seobag in Kullu valley with ten varieties of apple for three seasons (2008-2010). In the first crop season all the varieties matured within 157-188 days, while in the second and third seasons the crop matured with 159-179 and 156-187 days, respectively. The mean GDD accumulation from bud burst to fruit set was from 382 to 419° D and to maturity 2310 to 2957° D. The varieties, Mollice and Starkrimson consumed the lowest and highest GDD for attaining physiological maturity in different seasons among all varieties. But Commercial and Tydeman consumed the lowest and highest GDD for fruit setting. The photo thermal index (PTI) in all the varieties and seasons varied from 7.2 to 16.8 and 13.2 to 18.4° D/day at flowering and reproductive stages respectively.

scholarly journals Response of green gram (Vigna radiata L.) to potassium fertilization in coarse textured soils of Southern Haryana, India

2020 ◽  
Vol 41 (6) ◽  
pp. 1621-1625
Author(s):  
M.K. Jat ◽  
◽  
P.K. Yadav ◽  
R. Singh ◽  
A. Tikkoo ◽  
...  
Keyword(s):  
Field Experiments ◽  
Block Design ◽  
Green Gram ◽  
Optimum Dose ◽  
Research Station ◽  
K Uptake ◽  
Potassium Fertilization ◽  
The Mean ◽  
Potassium Application ◽  
On Farm

Aim: To evaluate the optimum dose and potassium application on K uptake by green gram and its buildup/depletion in soil to overcome the production of pulses in South West part of Haryana. Methodology: A series of field experiments and on farm trials were conducted during 2012 to 2016 at the Regional Research Station, CCS HAU, Bawal and at the farmers field to study the response of green gram to potassium fertilization in coarse textured medium K status soils of southern Haryana, India. Five levels of potassium (0, 10, 20, 30 and 40 kg K2O ha-1) were evaluated in randomized block design with three replications. Results: The results of study revealed that green gram seed yield increased significantly with application of potassium at 20 kg K2O ha-1. Potassium fertilization also significantly increased total K uptake by green gram at each level of potassium application and helped in preventing the depletion of available soil K and enhanced its content in the soil. The mean K use efficiency varied from 38.30 to 54.15 per cent, being maximum with application of 20 kg K2O ha-1 (54.15 %). The mean economic data analysis revealed that benefit cost ratio also increased with potassium fertilization. Interpretation: On farm trials conducted on farmers field revealed that application of 20 kg K2O ha-1 in coarse textured low to medium potash status soils is optimum for higher yield, returns and maintenance of available K status in soil.

scholarly journals Adaptibility of tomato genotypes suitable for coastal region of Patuakhali in Bangladesh

2017 ◽  
Vol 28 (2) ◽  
pp. 84-91 ◽  
Author(s):  
MN Hasan ◽  
MM Hasan ◽  
MZ Haque ◽  
MHK Howlader ◽  
UK Shanta
Keyword(s):  
Significant Influence ◽  
Coastal Region ◽  
Growth And Yield ◽  
Research Station ◽  
Yield Performance ◽  
Tertiary Branch ◽  
Fruit Setting ◽  
Number Of Leaves ◽  
Horticultural Research ◽  
Tomato Genotypes

A field experiment was carried out at the Regional Horticultural Research Station, Lebukhali, Patuakhali, during the winter. The experiment was conducted to find out adaptive tomato genotypes suitable for coastal Patuakhali region considering their growth and yield performance. The genotypes of this experiment showed significant influence independently on different parameters of tomato plant. The maximum plant height (86.80 cm) was found in BARI tomato-3. The maximum primary (2.55), secondary (9.55) and tertiary branch (4.48) were obtained from BARI tomato-14. The maximum number of leaves (34.93) obtained from BARI tomato-14. The highest length of largest leaves (35.87 mm) was recorded in BARI tomato-3. The maximum number of flower clusters plant-1 (19.47), number of flowers cluster-1 (6.62), number of fruit cluster-1 (4.84), number of flowers plant-1 (126.3), number of fruits plant-1 (88.0), minimum date for 50% flowering(53.33), highest percentage of fruit setting (76.27), minimum days to first harvest (101.7) were obtained from BARI tomato-14. Moreover, BARI tomato-14 also performed better in respect of yield (3.51 kg/plant and 124.8 t/ha). It may therefore concluded that the genotype BARI tomato-14 showed better growth and yield performance under the coastal condition and suitable for Patuakhali region.Progressive Agriculture 28 (2): 84-91, 2017

Increasing the crotch angle of young apple trees by using growth hormones or plastic discs

1976 ◽  
Vol 16 (79) ◽  
pp. 286
Author(s):  
SD Filipovich
Keyword(s):  
Growth Regulators ◽  
Growth Hormones ◽  
Research Station ◽  
Bud Burst ◽  
Apple Trees ◽  
Apple Variety ◽  
Horticultural Research ◽  
Young Apple

In two experiments carried out at the Scoresby Horticultural Research Station, with two growth regulators and plastic discs on maiden apple trees, branch angles were significantly increased. The growth regulators IBA and TIBA, and co-polymer plastic discs were applied at bud burst viz. when laterals were not longer than 5 cm in apple cvv. Jonathan, Granny Smith and Delicious (Hi-Early Sport). The application of growth regulators significantly increased branch angles, irrespective of apple variety or the branch position in the canopy. The plastic discs were more effective than either of the growth regulators.

Efficiency of Endophytic bacterial culture on yield and yield attributes of groundnut

2020 ◽  
pp. 514-518
Keyword(s):  
Field Experiments ◽  
Bacterial Culture ◽  
Block Design ◽  
Research Station ◽  
Yield Attributes ◽  
Net Returns ◽  
Randomized Block Design ◽  
Moisture Deficit ◽  
Moisture Deficit Stress ◽  
Horticultural Research

Field experiments were carried out for three consecutive years conducted during 2016, 2018 and 2019 during kharif season at Zonal Agricultural and Horticultural Research Station, Babbur farm, Hiriyur, Karnataka, India to study the alleviation of moisture-deficit stress in groundnut by application of endophytic bacteria under rainfed conditions. The experiment was laid out in randomized block design with three replication and eight treatments. The pooled results of three years revealed that treatment having DGREB-3 culture with intercultural operations significantly recorded higher pod yield (1022 kg ha-1) as compared to control (693 kg ha-1) and it is on par with any DGREB culture (T2) with two intercultural operations (909 kg ha-1). Any DGREB culture with two intercultural operations significantly recorded highest nodulations at 30 and 60 days (50.2 and 57.8) as compared to control (20.6 and 33.7). In case of higher gross returns (Rs. 46,565), net returns (Rs. 16,997) were recorded with DGREB-3 culture with intercultural operations. Whereas highest B:C (1.66) was recorded with any DGREB culture with two intercultural operations.

Yield and quality evaluation of ginger (Zingiber officinale Rosc) genotypes under high rainfall zone of Tamil Nadu

1970 ◽  
pp. 95
Author(s):  
R Balakumbahan ◽  
J P Joshua
Keyword(s):  
Tamil Nadu ◽  
Quality Evaluation ◽  
Zingiber Officinale ◽  
Fibre Content ◽  
Research Station ◽  
Local Strains ◽  
High Rainfall ◽  
Yield And Quality ◽  
Rainfall Region ◽  
Horticultural Research

An experiment on ginger was undertaken between April 2012 to March 2015 at Horticultural Research Station, Pechiparai with an objective to identify suitable ginger cultivar or accession with higher yield and quality attributes suitable for high rainfall zone of Tamil Nadu. Twenty four ginger genotypes, local strains and varieties were collected from different ginger growing tracts of India and evaluated for their performance in high rainfall region. Among the twenty four genotypes tested, the accession Z. O- 4 recorded higher fresh rhizome yield (22.16 ha-1) than other genotypes whereas Z. O - 6 recorded highest dry recovery per cent (22.47%). Higher oleoresin and fibre content was recorded in genotypes Z. O – 5 (9.56%) and Z . O – 17 (11.20%) respectively. 

Unequal Probability Scheme for Fruit Count in a Guava Tree

2016 ◽  
Vol 3 (4) ◽  
Author(s):  
R. C. BHARATI
Keyword(s):  
Cross Sectional Area ◽  
Equal Probability ◽  
Sampling Scheme ◽  
Research Station ◽  
Sectional Area ◽  
Cross Sectional ◽  
Unequal Probability ◽  
Selection Probabilities ◽  
Horticultural Research ◽  
Number Of Branches

Data on fruit count corresponding to primary, secondary and tertiary branches of a randomly selected guava CV. Allahabad Safeda were recorded from the guava orchard of Horticultural Research Station, Birauli. The proposed sampling scheme in which the selection probabilities are based on length of braches between two forking points was compared with equal probability(PE), probability proportional to the number of branches(PPN), probability proportional to the cross sectional area (PPA) and probability proportional to volume (PPV) method of sampling and found to be more efficient.

scholarly journals Combining Process Modelling and LAI Observations to Diagnose Winter Wheat Nitrogen Status and Forecast Yield

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 314
Author(s):  
Andrew Revill ◽  
Vasileios Myrgiotis ◽  
Anna Florence ◽  
Stephen Hoad ◽  
Robert Rees ◽  
...  
Keyword(s):  
Field Experiments ◽  
Process Models ◽  
Agricultural Technologies ◽  
N Application ◽  
Area Index ◽  
Complex Process ◽  
C Cycle ◽  
The Mean ◽  
Leaf N Content ◽  
Leaf N

Climate, nitrogen (N) and leaf area index (LAI) are key determinants of crop yield. N additions can enhance yield but must be managed efficiently to reduce pollution. Complex process models estimate N status by simulating soil-crop N interactions, but such models require extensive inputs that are seldom available. Through model-data fusion (MDF), we combine climate and LAI time-series with an intermediate-complexity model to infer leaf N and yield. The DALEC-Crop model was calibrated for wheat leaf N and yields across field experiments covering N applications ranging from 0 to 200 kg N ha−1 in Scotland, UK. Requiring daily meteorological inputs, this model simulates crop C cycle responses to LAI, N and climate. The model, which includes a leaf N-dilution function, was calibrated across N treatments based on LAI observations, and tested at validation plots. We showed that a single parameterization varying only in leaf N could simulate LAI development and yield across all treatments—the mean normalized root-mean-square-error (NRMSE) for yield was 10%. Leaf N was accurately retrieved by the model (NRMSE = 6%). Yield could also be reasonably estimated (NRMSE = 14%) if LAI data are available for assimilation during periods of typical N application (April and May). Our MDF approach generated robust leaf N content estimates and timely yield predictions that could complement existing agricultural technologies. Moreover, EO-derived LAI products at high spatial and temporal resolutions provides a means to apply our approach regionally. Testing yield predictions from this approach over agricultural fields is a critical next step to determine broader utility.

Stable Isotopes Analysis of Precipitation in Subtropical Plateau of Yunnan

2014 ◽  
Vol 1010-1012 ◽  
pp. 1059-1063
Author(s):  
Wei Guan ◽  
Tao Fan ◽  
Xiu Qin Zhu
Keyword(s):  
Stable Isotopes ◽  
Rainy Season ◽  
Mean Value ◽  
Dry Season ◽  
Precipitation Line ◽  
Stable Isotopic ◽  
Different Seasons ◽  
Geographical Position ◽  
The Mean ◽  
The Relationship

To elucidate the relationship between stable isotopes of precipitation (SIP) and the extreme drought in Kunming area, based on the stable isotopes data of the GNIP in Kunming site from 1986 to 2003, the precipitation line equation is brought forward and the seasonal change rule of stable isotopes are discussed. The stable isotopic compositions of precipitation exhibit great diversities in different seasons during to influences of multiple factors, such as monsoon, rainfall amount moisture source and others. The δ18O values in rainwater exhibit significant seasonal variations, the average of-10.12‰ in rainy season, the dry season is-4.5‰, having lower values in the rainy season and higher one in the dry season. The amount effect of precipitation is very distinct, that concealed the temperature effect. Got the special geographical position,dvalues present unique characteristics, the average ofdvalues is 10.78‰ in rainy season, and is 4.86‰ in dry season, the mean value is generally lower than most parts of the world.

scholarly journals Living mulch strategy for organic cauliflower (Brassica oleracea L.) production in central and southern Italy

2015 ◽  
Vol 10 (2) ◽  
pp. 90 ◽  
Author(s):  
Stefano Canali ◽  
Gabriele Campanelli ◽  
Corrado Ciaccia ◽  
Mariangela Diacono ◽  
Fabrizio Leteo ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Field Experiments ◽  
Southern Italy ◽  
Central Italy ◽  
Climatic Conditions ◽  
F1 Hybrid ◽  
Agronomic Practices ◽  
Burr Medic ◽  
The Mean ◽  
Sustainable Agricultural Systems

In sustainable agricultural systems, intercropping using living mulches (LM) provides many beneficial ecosystem services. The objective of these two-year field experiments was to study the suitability of different LM options of burr medic (<em>Medicago polymorpha</em> L. var. <em>anglona</em>) for organic cauliflower (<em>Brassica oleracea</em> L.) cultivation in two sites under Mediterranean conditions. In central Italy (Experiment 1) contemporary and delayed (to crop) sowings of LM were compared with a no-cover crop treatment, contrasting two local cauliflower cultivars and a F1 Hybrid. In southern Italy (Experiment 2) the sustainability of systems combining LM (anticipated and contemporary sowing compared with no-cover) and organic fertilisation strategies was assessed. The aboveground biomasses dry weights of cauliflower crop (heads and residues), burr medic and weeds were separately determined. Results suggested that in Experiment 1 the LM was not able to smother weeds establishment and growth, as a consequence of early sowing, while cauliflower yield was reduced. Moreover, the genotypes behaviour was greatly influenced by the LM sowing times. In Experiment 2, irrespective of the agronomic practices applied, climatic conditions notably influenced cauliflower cultivation and also reduced the mean yield. Therefore, the recorded differences between the two experimental sites highlighted the need to tailor the LM strategies to the different environmental conditions.

scholarly journals Validation of Target Yield based Fertilizer Prescription for Rabi Castor in Alfisol

2020 ◽  
pp. 166-173
Author(s):  
Kasthuri Rajamani ◽  
A. Madhavi ◽  
T. Srijaya ◽  
P. Surendra Babu ◽  
Pradip Dey
Keyword(s):  
Field Experiments ◽  
Agricultural Research ◽  
Organic Fertilizers ◽  
Research Station ◽  
Agricultural Research Station ◽  
Target Yield ◽  
Test Verification ◽  
Absolute Control ◽  
Inorganic And Organic

Field experiments were conducted from 2015-16 to 2017-18 on a Typic Rhodustalfs (Alfisol) soils of Telangana at Regional Agricultural Research Station, Palem, Nagarkurnool, Southern Telangana Zone, India to validate targeted yield based fertilizer prescription equations which developed for hybrid castor by adopting eight treatments viz., Blanket recommendation (100% RDF:80:40:30 kg N, P2O5 and K2O ha-1), Blanket+5 t ha-1 of vermin-compost (VC), STCR-Target yield with NPK alone at 25q ha-1, STCR-Target yield with IPNS at 25q ha-1, STCR-Target yield with NPK alone at 30q ha-1, STCR-Target yield with IPNS at 30q ha-1, Farmer’s practice (40:20:0kg N, P2O5 and K2O ha-1) and Absolute control (without inorganic and organic fertilizers). The findings of these test verification trials clearly revealed that the percent achievement of the aimed yield target was within + 10 percent variation confirming the validity of the equations. Using STCR-NPK@25 and 30q ha-1 recorded significantly higher seed (20.74 and 22.30q ha-1) and stalk (24.63 and 26.36q ha-1) yield over blanket recommendation (19.40 and 23.13 q ha-1), while STCR-IPNS at 25 and 30 q ha-1recorde relatively higher seed (20.98 and 22.69q ha-1) and stalk (25.88 and 27.13q ha-1) yield over STCR-NPK alone treatments. The magnitude of built-up was higher with STCR-IPNS treatments as compared to STCR-NPK alone, blanket recommendations, farmer’s practice and absolute control.

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