scholarly journals Effect of Shoot Bending and Fruit Thinning on Productivity of Guava

2013 ◽  
Vol 5 (2) ◽  
pp. 167-172
Author(s):  
AA Mamun ◽  
MH Rahman ◽  
MA Rahim
Keyword(s):  
Natural Resources ◽  
Management Practices ◽  
Tree Improvement ◽  
Fruit Tree ◽  
Fruit Yield ◽  
Combined Effect ◽  
Chiang Mai ◽  
Fruit Thinning ◽  
Improvement Programme ◽  
Shoot Bending

The study was carried out at the Germplasm Centre of Fruit Tree Improvement Programme (GPC-FTIP), Bangladesh Agricultural University, Mymensingh during the period February, 2011 to March, 2012 to find out the effect of shoot bending and fruit thinning on productivity of guava. The treatments of the experiment were four varieties of guava viz., Swarupkathi, BAU piyara-5, Chiang Mai (round) and Chiang Mai (long) and six different management practices viz., (i) control (no shoot bending + no fruit thinning); (ii) shoot bending; (iii) 25% fruit thinning; (iv) 50% fruit thinning; (v) 75% fruit thinning and (vi) 100% fruit thinning. The ages of the plants were 4-5 years. Results revealed that the variety Chiang Mai (round) showed superiority over BAU piyara-5, Chiang Mai (long) and Swarupkathi in respect of fruit yield (15.63 kg/plant) and fruit retention (72.92%) during on-season but during off-season, Swarupkathi showed superiority over Chiang Mai (round), BAU piyara-5 and Chiang Mai (long) in case of number of flowers set per plant (127.44), number of fruits set per plant (75.28), fruit retention (88.66%) and yield (11.78 kg/plant). Different management practices had significant effect on all studied parameters in both seasons. Fifty percent fruit thinning treatment showed the highest fruit yield (20.46 kg/plant) and 75% fruit thinning treatment performed lowest fruit yield (10.06 kg/plant) during on-season but during off-season shoot bending performed highest fruit yield (13.50 kg/plant). Highest fruit retention in both seasons (on-season 89.28% and off-season 90.47%) was observed in 50% fruit thinning treatment. In case of combined effect of variety and different management practices, 50% fruit thinning treatment combined with Chiang Mai (round) produced highest yield (23.15 kg/plant) and fruit retention (92.72%) during on-season, but shoot bending treatment combined with Swarupkathi gave the highest yield (16.06 kg/plant) and 50% fruit thinning combined with Swarupkathi showed highest fruit retention (94.12%) during off-season.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14808 J. Environ. Sci. & Natural Resources, 5(2): 167-172 2012

Screening of Mango Rootstock For Saline Tolerance

2021 ◽  
Vol 19 (1) ◽  
pp. 93-102
Author(s):  
MA Rahim ◽  
M Moniruzzaman ◽  
F Rahman
Keyword(s):  
Block Design ◽  
Tree Improvement ◽  
Fruit Tree ◽  
Improvement Project ◽  
Saline Tolerance ◽  
Randomized Complete Block Design ◽  
Salinity Levels ◽  
Improvement Programme ◽  
Number Of Leaves ◽  
Saline Area

An experiment was conducted at Fruit Tree Improvement Project, Fruit Tree Improvement Programme, Bangladesh Agricultural University-Germplasm Center (FTIP, BAU-GPC), Bangladesh Agricultural University (BAU), Mymensingh during the period of April 2020 to June 2020 to study the performance of selected mango rootstocks for the saline area. The two-factor experiment consisted of four mango rootstock varieties such as V1 = BAU Aam-9, V2 = BAU Aam-6, V3 = BAU Aam-4 and V4 = Amropali and six salinity treatments namely control S1 = 0 dSm-1, S2 = 4 dSm-1, S3 = 8 dSm-1, S4 = 10 dSm-1, S5 = 12 dSm-1 and S6 = 14 dSm-1. The experiment was conducted following randomized complete block design with three replications. Results revealed that rootstock line and salinity levels had significant influences on various rootstock characters viz. length of rootstocks, number of leaves and percent rootstocks success and survivability. In case of varietal effect, the highest number of leaves (32.44) found in BAU Aam-6 and the lowest number of leaves was recorded in Amropali (22.55) at 90 days after transplanting. The longest rootstock length observed in 90 DAT which (54.83 cm) found in BAU Aam-9and shortest rootstock recorded in Amropali (47.94 cm). The highest survivability (51.44%) was recorded in BAU Aam-9 and the lowest survivability recorded in Amropali (33.88%). In case of salinity treatments, the highest survivability (95.83%) was recorded in control and the lowest survivability (0.00%) recorded in 14 dsm-1 at 90 DAT. Interaction of rootstock varieties and different salinity treatments showed significant variation on the length leave and survivability of rootstocks at 90 DAT. The maximum number of rootstock leaves recorded in V2S2 (46.33) and lowest number of leave recorded in V4S6 (7.66). The highest rootstock length was found in V1S3 (78.00 cm) and lowest in V1S2 (21.66 cm). The highest Survivability (100 %) observed in V1S1, V1S2, V2S1, V2S2 and V4S1. From the above mentioned it can be said BAU Aam - 9 and BAU Aam – 6 rootstock varieties performed best from 0-8 dSm-1 salinity. The overall salinity tolerance was graded as follows: BAU Aam - 9>BAU Aam – 6> BAU Aam-4>Amropali rootstock line. SAARC J. Agric., 19(1): 93-102 (2021)

scholarly journals Fruit Tree-Based Agroforestry Systems for Smallholder Farmers in Northwest Vietnam—A Quantitative and Qualitative Assessment

Land ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 451
Author(s):  
Van Hung Do ◽  
Nguyen La ◽  
Rachmat Mulia ◽  
Göran Bergkvist ◽  
A. Sigrun Dahlin ◽  
...  
Keyword(s):  
Management Practices ◽  
Smallholder Farmers ◽  
Knowledge Exchange ◽  
Fruit Trees ◽  
Agroforestry Systems ◽  
Fruit Tree ◽  
Rapid Expansion ◽  
Qualitative Assessment ◽  
Forage Grass ◽  
High Investment

Rapid expansion of unsustainable farming practices in upland areas of Southeast Asia threatens food security and the environment. This study assessed alternative agroforestry systems for sustainable land management and livelihood improvement in northwest Vietnam. The performance of fruit tree-based agroforestry was compared with that of sole cropping, and farmers’ perspectives on agroforestry were documented. After seven years, longan (Dimocarpus longan Lour.)-maize-forage grass and son tra (Docynia indica (Wall.) Decne)-forage grass systems had generated 2.4- and 3.5-fold higher average annual income than sole maize and sole son tra, respectively. Sole longan gave no net profit, due to high investment costs. After some years, competition developed between the crop, grass, and tree components, e.g., for nitrogen, and the farmers interviewed reported a need to adapt management practices to optimise spacing and pruning. They also reported that agroforestry enhanced ecosystem services by controlling surface runoff and erosion, increasing soil fertility and improving resilience to extreme weather. Thus, agroforestry practices with fruit trees can be more profitable than sole-crop cultivation within a few years. Integration of seasonal and fast-growing perennial plants (e.g., grass) is essential to ensure quick returns. Wider adoption needs initial incentives or loans, knowledge exchange, and market links.

scholarly journals Deep subsoiling of a subsurface-compacted typical hapludult under citrus orchard

2013 ◽  
Vol 37 (4) ◽  
pp. 911-919 ◽  
Author(s):  
João Carlos Medeiros ◽  
Getulio Coutinho Figueiredo ◽  
Álvaro Luiz Mafra ◽  
Jaqueline Dalla Rosa ◽  
Sung Won Yoon
Keyword(s):  
Hydraulic Conductivity ◽  
Management Practices ◽  
Soil Management ◽  
Penetration Resistance ◽  
Soil Bulk Density ◽  
Soil Samples ◽  
Fruit Yield ◽  
Root Depth ◽  
Citrus Orchard ◽  
Unsaturated Hydraulic Conductivity

Soil management practices which increase the root depth penetration of citrus are important to the longevity and yield maintenance of this plant, especially in regions where long periods of drought are common, even in soil conventionally subsoiled to a depth of 30-40 cm, when the orchard was first established. The objective of this study was to evaluate the efficiency of subsoiling on the physical and hydric properties of a Typical Hapludult and fruit yield in a 14-year-old citrus orchard located in Piracicaba, SP. The treatments consisted of: no-subsoiling (with no tilling of the soil after the orchard was planted); subsoiling on one side of the plant lines (SUB. 1); and subsoiling on both sides of the plant lines (SUB. 2). The subsoiling treatments were carried out 1.5 m from the plant lines and to a depth of 0.8 m. Soil samples were taken 120 days after this operation, at four depths, in order to determine physical and hydric properties. Fruit yield was evaluated 150 days after subsoiling. Subsoiling between the plant lines of an old established citrus orchard alters the physical and hydric properties of the soil, which is reflected in increased soil macroporosity and unsaturated hydraulic conductivity, and reduced soil bulk density, critical degree-of-compactness and penetration resistance. The improvements in the physical and hydric properties of the soil were related to an increase in fruit number and orchard yield.

scholarly journals Effect of Variety and Weed Management Practices on Yield and Yield Attributes of Wheat

2013 ◽  
Vol 5 (2) ◽  
pp. 91-96
Author(s):  
MR Sultana ◽  
MA Alim ◽  
MB Hossain ◽  
S Karmaker ◽  
MS Islam
Keyword(s):  
Natural Resources ◽  
Grain Yield ◽  
Weed Management ◽  
Yield Components ◽  
Management Practices ◽  
Yield Attributes ◽  
Free Treatment ◽  
Yield And Yield Components ◽  
Hand Weeding ◽  
Plot Design

An experiment was conducted at Agronomy Field Laboratory of Rajshahi University to evaluate the effect of variety and weeding regime on yield and yield components of wheat. Four varieties viz. Prodip -V1, Gourab -V2, Shatabdi -V3, Bijoy -V4 and five weeding regime viz. a) No weeding -W0, b) Weed free -W1, c) One hand weeding at 20 DAS -W2, d) Two hand weeding (1st at 20 DAS and 2nd at 42 DAS) -W3 and e) Lintur 70 WG @ 250 g ha-1 -W4 were included as treatments in the experiment. The experiment was laid out in a Split-plot Design with three replications. The results revealed that Prodip produced the highest grain yield (5.33 t ha-1) followed by Gourab (4.85 t ha-1), while the lowest grain yield (3.98 t ha-1) was obtained from Shatabdi. The highest grain yield (5.09 t ha-1) was obtained in Weed free (W1) followed by W3 (Two hand weeding) (4.89 t ha-1) and the lowest grain yield (4.13 t ha-1) was obtained in no weeding treatment (W0). The highest grain yield (5.64 t ha-1) was obtained from the combination of Prodip and weed free treatment (V1W1) and the lowest (3.57 t ha-1) was obtained from the combination between Shatabdi and no weeding treatment (V4W0).DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14800 J. Environ. Sci. & Natural Resources, 5(2): 91-96 2012

Native fruit tree improvement in Amazonia: an overview.

2009 ◽  
pp. 100-119
Author(s):  
C. R. Clement ◽  
J. P. Cornelius ◽  
M. H. Pinedo-Panduro ◽  
K. Yuyama
Keyword(s):  
Tree Improvement ◽  
Fruit Tree

scholarly journals Mango Fruit Load Estimation Using a Video Based MangoYOLO—Kalman Filter—Hungarian Algorithm Method

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2742 ◽  
Author(s):  
Wang ◽  
Walsh ◽  
Koirala
Keyword(s):  
Deep Learning ◽  
Kalman Filter ◽  
Imaging System ◽  
Tracking System ◽  
Video Tracking ◽  
Fruit Tree ◽  
Fruit Yield ◽  
Image Method ◽  
Mango Fruit ◽  
Hungarian Algorithm

: Pre-harvest fruit yield estimation is useful to guide harvesting and marketing resourcing, but machine vision estimates based on a single view from each side of the tree (“dual-view”) underestimates the fruit yield as fruit can be hidden from view. A method is proposed involving deep learning, Kalman filter, and Hungarian algorithm for on-tree mango fruit detection, tracking, and counting from 10 frame-per-second videos captured of trees from a platform moving along the inter row at 5 km/h. The deep learning based mango fruit detection algorithm, MangoYOLO, was used to detect fruit in each frame. The Hungarian algorithm was used to correlate fruit between neighbouring frames, with the improvement of enabling multiple-to-one assignment. The Kalman filter was used to predict the position of fruit in following frames, to avoid multiple counts of a single fruit that is obscured or otherwise not detected with a frame series. A “borrow” concept was added to the Kalman filter to predict fruit position when its precise prediction model was absent, by borrowing the horizontal and vertical speed from neighbouring fruit. By comparison with human count for a video with 110 frames and 192 (human count) fruit, the method produced 9.9% double counts and 7.3% missing count errors, resulting in around 2.6% over count. In another test, a video (of 1162 frames, with 42 images centred on the tree trunk) was acquired of both sides of a row of 21 trees, for which the harvest fruit count was 3286 (i.e., average of 156 fruit/tree). The trees had thick canopies, such that the proportion of fruit hidden from view from any given perspective was high. The proposed method recorded 2050 fruit (62% of harvest) with a bias corrected Root Mean Square Error (RMSE) = 18.0 fruit/tree while the dual-view image method (also using MangoYOLO) recorded 1322 fruit (40%) with a bias corrected RMSE = 21.7 fruit/tree. The video tracking system is recommended over the dual-view imaging system for mango orchard fruit count.

Reinforcing alternative economies: self-motivated work by central Anmatyerr people to sell Katyerr (Desert raisin, Bush tomato) in central Australia

2011 ◽  
Vol 33 (3) ◽  
pp. 255 ◽  
Author(s):  
Sarah Holcombe ◽  
Peter Yates ◽  
Fiona Walsh
Keyword(s):  
Natural Resources ◽  
Federal Government ◽  
Land Management ◽  
Management Practices ◽  
Aboriginal People ◽  
Alternative Economies ◽  
Central Australia ◽  
Hybrid Economy ◽  
Alternative Economy

This paper examines an alternative economy in the Anmatyerr region of central Australia, with reference to the ‘hybrid economy’ concept. We argue that this concept has application in recognising emerging Aboriginal economies surrounding the utilisation and management of natural resources. In particular, we examine the ‘bush harvest’ of one species – where Aboriginal people sell Desert raisin (Katyerr or Bush tomato) to traders who then on-sell to manufacturers and retailers. This seasonal economy intermittently injects relatively significant amounts of cash into households (but unaccounted for in census figures). Although some groups have been selling bush harvest produce for up to 30 years, it is increasingly gaining momentum with a larger market developing. Yet, there is a risk that this burgeoning market and the mainstream interest in horticulture will fail to recognise the value of local Aboriginal motivations that drive the customary harvest activity. Nevertheless, there is increased federal government recognition, via the Central Land Council, of the value of Aboriginal people as local land managers; as rangers. This in turn has provided resources to promote and encourage this harvest through the recognition of Aboriginal land management practices, such as seasonal burning to encourage the crop’s growth.

Report card on sustainable natural-resource use in the agricultural regions of Western Australia

Soil Research ◽  
2015 ◽  
Vol 53 (6) ◽  
pp. 695 ◽  
Author(s):  
Noel Schoknecht
Keyword(s):  
Natural Resources ◽  
Land Management ◽  
Natural Resource ◽  
Western Australia ◽  
Management Practices ◽  
Current Knowledge ◽  
Report Card ◽  
The Status ◽  
Agricultural Industries ◽  
Agricultural Areas

A ‘Report Card’, which summarises the current knowledge of the status and trend in land condition in the agricultural areas of the south-west of Western Australia, was published in 2013 by the Department of Agriculture and Food, Western Australia. The Report Card draws on best available evidence from government and industry on the current condition and trend of 10 soil- and water-related natural resource themes relevant to agriculture, and discusses the implications of these results for the agricultural industries. The report also discusses the three main factors driving the performance of the land, namely climate, land characteristics and land management. The first two factors are largely out of the control of land managers, but in a drying and warming climate of the agricultural areas of Western Australia, land-management practices need to be able to respond to these changing conditions. The paper briefly explains the methodologies used to assess the seven soil-related themes in the Report Card and summarises the major findings. The results indicate that, for soils, the situation and outlook for our natural resources is mixed. Although there has been progress in some areas, such as managing wind and water erosion, the status and trend in many indicators of resource condition, such as soil acidity, soil compaction and water repellence, are adverse. The predicted growth in global demand for food and fibre brings many opportunities to the Western Australian agri-food sector but also challenges, especially in light of the Report Card findings. One of these challenges is our need to achieve agricultural productivity growth while ensuring our natural resources are healthy and resilient.

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